The major product formed in the following reaction is:

Question

Vimal Swarnkar · Accepted Answer

(c) Alkene: Me/Me cis, H/Ph cis. TsCl/py converts OH to OTs with retention (C–O not broken). NaOEt then does anti-periplanar E2: placing C3–H anti to OTs puts the two Me groups on the same side and Ph cis to H → alkene (c). E2 is stereospecific.

Answer

(a) Ethyl ether, retention

Answer

(b) Ethyl ether, inversion

Answer

(d) Alkene: Me/Ph cis, H/Me cis

Geo-Scientist Prelims 2020 Chemistry Q103: The major product formed in the following reaction is:

QuestionOrganic / E2 stereochemistry