Metal/ammonia reduction of ethers of 3-decyn-1-ol: effects of structure and conditions on cleavage and rearrangement
摘要:
Reduction of the THP, ethyl, tert-butyl and tert-butyldimethylsilyl (TBDMS) ethers of 3-decyn-1-ol with sodium in ammonia/THF results in extensive hydrogenolysis of the carbon-oxygen bond and concomitant bond migration, producing a mixture of 2- and 3-decenes and a very low yield of the desired (E)-homoallylic ether. Reduction in the presence of 2-methyl-2-propanol led to excellent yields of the desired (E)-3-decenol ethers. The 4- and 5-decyn-1-ol ethers were reduced normally to the (E)-decen-1-ol ethers except in the case of the TBDMS ethers which were cleaved to the (E)-alcohols under some of the reaction conditions.
Metal/ammonia reduction of ethers of 3-decyn-1-ol: effects of structure and conditions on cleavage and rearrangement
作者:Robert E. Doolittle、Delrea G. Patrick、Robert H. Heath
DOI:10.1021/jo00071a014
日期:1993.9
Reduction of the THP, ethyl, tert-butyl and tert-butyldimethylsilyl (TBDMS) ethers of 3-decyn-1-ol with sodium in ammonia/THF results in extensive hydrogenolysis of the carbon-oxygen bond and concomitant bond migration, producing a mixture of 2- and 3-decenes and a very low yield of the desired (E)-homoallylic ether. Reduction in the presence of 2-methyl-2-propanol led to excellent yields of the desired (E)-3-decenol ethers. The 4- and 5-decyn-1-ol ethers were reduced normally to the (E)-decen-1-ol ethers except in the case of the TBDMS ethers which were cleaved to the (E)-alcohols under some of the reaction conditions.
Mori, K.; Abe, K., Polish Journal of Chemistry, 1994, vol. 68, # 11, p. 2255 - 2264