Direct introduction of CH2OH by intermolecular trapping of CO
摘要:
Alkyl iodides are converted to the corresponding hydroxymethyl compounds in good yield by treatment with catalytic triphenylgermane-NaBH3CN-AIBN in benzene-THF under an atmosphere of CO at high pressure. This methodology is used for the synthesis of an analogue of the B ring of the calicheamicin oligosaccharide in which the hydroxylamine at C4 is replaced by a hydroxymethyl group.
Direct introduction of CH2OH by intermolecular trapping of CO
摘要:
Alkyl iodides are converted to the corresponding hydroxymethyl compounds in good yield by treatment with catalytic triphenylgermane-NaBH3CN-AIBN in benzene-THF under an atmosphere of CO at high pressure. This methodology is used for the synthesis of an analogue of the B ring of the calicheamicin oligosaccharide in which the hydroxylamine at C4 is replaced by a hydroxymethyl group.