Give the product, indicating stereo-chemistry of cyclohexene with :
(a) `Br_2`
(b) `Br_2 "in" NaCl`
(c) `Br_2 "in" CH_3 OH`
(d) `Br_2 "in" H_2 O`
( e) `KI//H_3 PO_4`.

Explanation

(a) trans-1,2-Dibromocyclohexene (A)
(b) (A) + trans-1-Bromo-2-chloro-cyclohexene (no dichloro product)
(c) (A) + trans-1-Bromo-2-methoxy-cyclohexene
(d) trans-2-Bromocyclohexanol
Iodocyclohexane (This reagent is cheaper than using `HI`).