Reagents 1. excess NABH4 Trimethylsilyl chloride / triethylamine a h 1. Li(CH3)2Cu 2. H30* e 2. Hзо* b 1. 1 еq. NaBH4 2. Hзо* CrO3 / H30* f 1. CH3MGB / dry ether 2 H30* i 1. LIAIH4 Dess-Martin...

How might you carry out the following selective transformations? (Note that a protection step may be required, and recall that aldehydes are more reactive than ketones toward nucleophilic addition.)

Extracted text: Reagents 1. excess NABH4 Trimethylsilyl chloride / triethylamine a h 1. Li(CH3)2Cu 2. H30* e 2. Hзо* b 1. 1 еq. NaBH4 2. Hзо* CrO3 / H30* f 1. CH3MGB / dry ether 2 H30* i 1. LIAIH4 Dess-Martin periodinane in CH2CI2 g HOCH2CH2OH / HCI 2. Hзо* d aqueous HCI Он a) H. H. но снз b)