IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry

konichiwa2x

Hi,

1) Arrange the following carbenes in the increasing order of stability if they are

(a) singlet carbenes

(b) triplet carbenes

2)

Which of the following statements is/are correct about A and B if the carbene is singlet?

(A) They are diastereomers

(B) They are geometrical isomers

(C) They are enantiomers

(D) None of the above

3) The number of products formed in the reaction given in the previous question, if the carbene is triplet is

(A) 2

(B) 3

(C) 1

(D) 4

chem4884

Q2..... C

as singlet carbene has es of opp. spins ,so it will result into syn addn

Q3......A

triplet carbene has es of similar spin ,so after addn by one e ,there will be bond rotation to attain proper orientation with respect to e spin ....after that second bond will form

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