a. Propose a stepwise mechanism that accounts for the transformations below. 1. NaOEt/ELOH 2. H,O+, heat OEt

A-D please! Thank you so much!

Identify the missing reactants/reagents B in the reaction shown below? B HO H a. 1. NaH; 2. BH3, H₂O O b. 1. NaBH4; 2. HCI, H₂O O c. 1. NaOH; 2. NaBH4 O d. 1. BH3; 2. NaCl, H₂O Ph₂N Which of the following is correct with regard to the below leaving groups? Br b Pho + NaCl с + BH3 O a. The order from best leaving group to worst leaving group is c, d, a, b.

What is final product of reaction and mechanism? with arrows

Part 3 need help.

Which reagents are required to accomplish the transformation below? MeO A. 1. MeMgBr 2. H₂O B. 1. MeMgBr 2. MeBr C. NaBH4, MeOH D. 1. NaBH4, MeOH 2. NaH 3. MeBr MeO E. 1. LiAlH4 2. H₂O F. 1. LiAlH4 2. MeBr G. 1. H₂SO4 2. MeMgBr OMe + enant. H. 1. cat. TSOH, excess MeOH 2. LIAIH4 3. MeBr

4. Predict the product for the following reaction. 0 COCH3 NaBH4/H₂O ک... H A) HO COCH3 B) HO CH2OH C) H. HO OH

this is org chm hw

16. CH;-CH-CH; + Hz Pt What is the major product for the reaction above?

1. Complete the following transformation, show step-by-step scheme "iy" H H H AND