/>
Lalpur, Ranchi, India - 834001.
Details verified of Pappu Kumar✕
Identity
Education
Know how UrbanPro verifies Tutor details
Identity is verified based on matching the details uploaded by the Tutor with government databases.
Hindi Mother Tongue (Native)
English Basic
Ranchi university
Pursuing
Bachelor of Science (B.Sc.)
Lalpur, Ranchi, India - 834001
Phone Verified
Email Verified
Report this Profile
Is this listing inaccurate or duplicate? Any other problem?
Please tell us about the problem and we will fix it.
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 11 Tuition
2
Board
State, CBSE
State boards taught
Delhi State Board, Bihar State Board
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Applied Mathematics, Mathematics, Chemistry, Physics
Taught in School or College
No
State Syllabus Subjects taught
Mathematics, Physics, Chemistry, Biology
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 9 Tuition
2
Board
State, CBSE
State boards taught
Delhi State Board, Bihar State Board
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Science, Mathematics
Taught in School or College
Yes
State Syllabus Subjects taught
Science, Hindi, Mathematics
Teaching Experience in detail in Class 9 Tuition
My teaching experience of class 9 is 2 years.
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 10 Tuition
2
Board
State, CBSE
State boards taught
Delhi State Board, Bihar State Board
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Science, Mathematics
Experience in School or College
My teaching experience is 2 years.
Taught in School or College
Yes
State Syllabus Subjects taught
Science, Mathematics
Teaching Experience in detail in Class 10 Tuition
2 years is my teaching experience
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 12 Tuition
1
Board
State, CBSE
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Applied Mathematics, Mathematics
State board looking for
Delhi State Board, Bihar State Board
Taught in School or College
No
State Syllabus Subjects taught
Mathematics
1. Which school boards of Class 12 do you teach for?
State and CBSE
2. Have you ever taught in any School or College?
No
3. Which classes do you teach?
I teach Class 10 Tuition, Class 11 Tuition, Class 12 Tuition and Class 9 Tuition Classes.
4. Do you provide a demo class?
Yes, I provide a free demo class.
5. How many years of experience do you have?
I have been teaching for 2 years.
Answered on 28 May Learn CBSE/Class 11/Science/Chemistry
Answered on 28 May Learn CBSE/Class 11/Science/Chemistry
An electrocyclic reaction is a type of pericyclic reaction where a conjugated polyene undergoes a concerted ring closure or ring opening process, resulting in the formation or cleavage of a single sigma bond. This reaction involves the reorganization of π-electrons in a cyclic manner.
Example of Electrocyclic Reaction
One classic example of an electrocyclic reaction is the thermal ring closure of hexatriene to form cyclohexadien
Thermal Ring Closure of Hexatriene:
- **Reactant:** 1,3,5-Hexatriene (a conjugated triene with six π-electrons)
- **Product:** 1,3-Cyclohexadiene
**Reaction Mechanism:**
1. **Conrotatory Motion:** The terminal π-orbitals of the hexatriene rotate in a conrotatory fashion (both rotate in the same direction) to form a new σ-bond between the terminal carbons.
2. **Resulting Product:** A six-membered ring, 1,3-cyclohexadiene, is formed.
# Stereochemistry of Electrocyclic Reactions
The stereochemistry of the product depends on the number of π-electrons and whether the reaction is induced by heat (thermal) or light (photochemical):
- **Thermal Electrocyclic Reactions:** Follow the Woodward-Hoffmann rules, which state that systems with 4n π-electrons (where n is an integer) will undergo conrotatory motion, while systems with 4n+2 π-electrons will undergo disrotatory motion (opposite rotation of the terminal orbitals).
- **Photochemical Electrocyclic Reactions:** Systems with 4n π-electrons will undergo disrotatory motion, while systems with 4n+2 π-electrons will undergo conrotatory motion.
# Example of Photochemical Electrocyclic Reaction
# Photochemical Ring Opening of Cyclobutene:
- **Reactant:** Cyclobutene (a four-membered ring)
- **Product:** 1,3-Butadiene
**Reaction Mechanism:**
1. **Disrotatory Motion:** Upon irradiation with light, the σ-bond of cyclobutene breaks in a disrotatory manner (the terminal orbitals rotate in opposite directions).
2. **Resulting Product:** The four-membered ring opens up to form 1,3-butadiene.
Conclusion
Electrocyclic reactions are a fascinating area of organic chemistry involving the cyclic reorganization of π-electrons to form or break a σ-bond. These reactions are governed by the Woodward-Hoffmann rules, which dictate the stereochemical outcome based on the number of π-electrons and the mode of activation (thermal or photochemical).
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 11 Tuition
2
Board
State, CBSE
State boards taught
Delhi State Board, Bihar State Board
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Applied Mathematics, Mathematics, Chemistry, Physics
Taught in School or College
No
State Syllabus Subjects taught
Mathematics, Physics, Chemistry, Biology
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 9 Tuition
2
Board
State, CBSE
State boards taught
Delhi State Board, Bihar State Board
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Science, Mathematics
Taught in School or College
Yes
State Syllabus Subjects taught
Science, Hindi, Mathematics
Teaching Experience in detail in Class 9 Tuition
My teaching experience of class 9 is 2 years.
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 10 Tuition
2
Board
State, CBSE
State boards taught
Delhi State Board, Bihar State Board
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Science, Mathematics
Experience in School or College
My teaching experience is 2 years.
Taught in School or College
Yes
State Syllabus Subjects taught
Science, Mathematics
Teaching Experience in detail in Class 10 Tuition
2 years is my teaching experience
Class Location
Online Classes (Video Call via UrbanPro LIVE)
Student's Home
Tutor's Home
Years of Experience in Class 12 Tuition
1
Board
State, CBSE
Preferred class strength
One on one/ Private Tutions, Group Classes
CBSE Subjects taught
Applied Mathematics, Mathematics
State board looking for
Delhi State Board, Bihar State Board
Taught in School or College
No
State Syllabus Subjects taught
Mathematics
Answered on 28 May Learn CBSE/Class 11/Science/Chemistry
Answered on 28 May Learn CBSE/Class 11/Science/Chemistry
An electrocyclic reaction is a type of pericyclic reaction where a conjugated polyene undergoes a concerted ring closure or ring opening process, resulting in the formation or cleavage of a single sigma bond. This reaction involves the reorganization of π-electrons in a cyclic manner.
Example of Electrocyclic Reaction
One classic example of an electrocyclic reaction is the thermal ring closure of hexatriene to form cyclohexadien
Thermal Ring Closure of Hexatriene:
- **Reactant:** 1,3,5-Hexatriene (a conjugated triene with six π-electrons)
- **Product:** 1,3-Cyclohexadiene
**Reaction Mechanism:**
1. **Conrotatory Motion:** The terminal π-orbitals of the hexatriene rotate in a conrotatory fashion (both rotate in the same direction) to form a new σ-bond between the terminal carbons.
2. **Resulting Product:** A six-membered ring, 1,3-cyclohexadiene, is formed.
# Stereochemistry of Electrocyclic Reactions
The stereochemistry of the product depends on the number of π-electrons and whether the reaction is induced by heat (thermal) or light (photochemical):
- **Thermal Electrocyclic Reactions:** Follow the Woodward-Hoffmann rules, which state that systems with 4n π-electrons (where n is an integer) will undergo conrotatory motion, while systems with 4n+2 π-electrons will undergo disrotatory motion (opposite rotation of the terminal orbitals).
- **Photochemical Electrocyclic Reactions:** Systems with 4n π-electrons will undergo disrotatory motion, while systems with 4n+2 π-electrons will undergo conrotatory motion.
# Example of Photochemical Electrocyclic Reaction
# Photochemical Ring Opening of Cyclobutene:
- **Reactant:** Cyclobutene (a four-membered ring)
- **Product:** 1,3-Butadiene
**Reaction Mechanism:**
1. **Disrotatory Motion:** Upon irradiation with light, the σ-bond of cyclobutene breaks in a disrotatory manner (the terminal orbitals rotate in opposite directions).
2. **Resulting Product:** The four-membered ring opens up to form 1,3-butadiene.
Conclusion
Electrocyclic reactions are a fascinating area of organic chemistry involving the cyclic reorganization of π-electrons to form or break a σ-bond. These reactions are governed by the Woodward-Hoffmann rules, which dictate the stereochemical outcome based on the number of π-electrons and the mode of activation (thermal or photochemical).
Want to learn from Pappu Kumar?
Share this Profile
Recommended Profiles
Reply to 's review
Enter your reply*
Your reply has been successfully submitted.
Certified
The Certified badge indicates that the Tutor has received good amount of positive feedback from Students.
Lalpur,
Ranchi
