10.What is the major product of the following two-step reaction? ○m 1)TsCl,pyridine 2)NaCN C C C) Con ◇o raction cun 11.What is the major product of the following reactior 入入Br Ph,P DMSC0、 A) 入人gm,BP B) c) 人。 D E)no reaction occurs Ans:A Page5Page 5 10. What is the major product of the following two-step reaction? OH 1) TsCl, pyridine 2) NaCN ? A) O Na B) CN C) OTs D) O E) no reaction occurs Ans: C 11. What is the major product of the following reaction: Br Ph3P / DMSO ? A) PPh3 Br + - B) C) P Br D) E) no reaction occurs Ans: A