PROBLEM The alkoxymercuration of alkenes involves the formation of an organomercury intermediate (I), 18-26 which is reduced with NaBH4 to give an ether product. Predict the ether product and provide the mechanism for the following reaction. Hg(CF3CO2)2 CH3CH2OH NaBH4 I ?

Give the major product of the following reaction. مشن Ph-CEC-H 1) NaNH, 2) CH3CH2CH2CI, ? O There is no reaction under these conditions or the correct product is not listed here.

When phosgene is treated with excess methanol, a product is formed whose "H NMR spectrum shows one peak-a singlet at 3.8 ppm. Provide a complete, CH,OH ? CI CI detailed mechanism for this reaction. Phosgene

Identify the suitable reagents for the given reaction and arrange them accordingly. 1 OH OEt 2 OEt OEt O 1) EtOH, H₂SO4; 2) EtOH, H₂SO4 O 1) EtONa followed by H₂O; 2) TsCl/py followed by EtONa O 1) EtONa followed by H₂O; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) TsCy followed by EtONa

Complete the following reaction with mechanism and a major product: O₂N- -CHCO₂Et CO₂Et PhCH₂Cl K₂CO3

The addition of H2O with ethynylcyclohexane will lead to what major product?

Q4-) Obtain following diazo compound in two steps by writing mechanism and write necessary starting compounds and reagents you used. CI HO N=N-

Which would be the major isolated organic product of the reaction shown? O A OB OC OD OE H₂C H₂ A) A chiral alkene B) a meso compound C) a racemic mixture D) A chiral alkane H₂ catalytic Pt or Pd. E) a different product or a mixture of more than one of the choices in equal amounts

) Starting from benzent synthesigo the fo lloning compounds. çooH NO2 NO2 NO2 NO2 Br

Predict the Major product(s) for the following reactions. mechanism: Br mechanism: Show the correct stereochemistry when needed!! NH₂ substitution LICH3 THE A elimination