Question

Identity the reactant that would complete the epoxidation strong copie opening and other formation synthetic sequence to give the product 1. MCPBA 2. H₂O® 22 MCPBA 1. MeMgBr 1. Nah 2. H2O2. PhCH,Br Ph What are the products X and Y from the given reaction sequences? он Ph 1. OsO4 2. NaHSO3 HO (A) (B) (C) (D) IV A

Answer 1

SOS m-epBA ongeh Phi (m) (J) MOM Bb toph 0. Epoxidation reaction. Me Na o ph Woh Bh Desined wet) r PL product) PL Pho Phme SN2 SN2 Epoxidation mechanism s Ph. Where where in 5 Rathorg-H = i R- Dheibe d ER 7. ROH (M-CABA) Therefore the compound is pha Thug option 'e is connect. s pha (1 ph Bh I not the given The other compounds may lead to different final products like - nu m-CPBA a t MemaBb C Follt (I) Nata forth They option A is inconnect. product) Bph M-CPBA, a 100 (menghe Nah, Ph - Hệ 0 ^ Ph Y pm Rh Phr Thug option 'B' is in connect. (Different product) MemaBb +4 NOH IL H one phrauch H2o Phn Bh picPBA D) Ph tht , Pheri 4. ph-OH + CH₂ They option is inconnect. A con i m-CPBA phrarchy merging ph-OH + H2O Thus option E is inconnect. Nat latt, Pha ph Bh

2 OH GOS Here Narso reacting as co-neactant, breaks down the resulting Cyclic Os compound into the did. and osmium sout (тум-РВА Therefore x is compound (II) | and Jy is compound (1) mot-
All the discussions about the starting meterials and the products along with the mechanisms are done above please go through it.

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