1mostly!
9 Answers
1it wud form a inserted product .....i.e the carbond on tghe double bond will ....the dichloro carbene wud form an bond withh both atoms ..of double bond!
1
The addition of carbenes to alkenes is principally to make cyclopropanes.
:CCl2 is generated by t-BuO-K+ and CHCl3
the dichlorocyclopropanes can be reduce to hydrocarbons.
*** the addition of dichlorocarbenes, like that of singlet methylene, is stereoselective and stereospecific and syn.
The single product formed here is generated in two steps:
1) attack on chloroform by a very strong base
2) addition on alkene
for reference page 512-513 Morrison-Boyd
39Adding a little more, the generation of carbene is caused by ALPHA-elimination in chloroform via a base. (Normal eliminations are beta eliminations)