Organic Matrix Match

1-BC
2-B
3-B
4-BD

not sure

1 it seems to be a NGP reaction(Neighbouring grp particiaption..) so i go with C and D
2 A,C,D,E (not sure)
3 furan undergoes substitution reaction so none of the options matching : (
4.first witting reaction..so answers shud be B,D,E

1. NGP definitely, still would yu call it a CYCLIC T.S.
2. br2 ccl4 addn should it not be trans
3. furan will not react is understable, but it does diels alder even though it is aromatic unlike thiophene or pyrrole (if i recall correctly)
4. E is possible (i overlooked it)

kaunse book se hai yaar.please reply.Desperately wanna know.

Yeah the Br₂/CCl₄ addition is anti...it's not syn.
govind, in 2 how will it form a new cycle?