期刊
ORGANIC LETTERS
卷 17, 期 6, 页码 1573-1576出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b00454
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资金
- National Research Foundation, Korea [2012R1A1A2006930]
- National Research Foundation of Korea [2012R1A1A2006930] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A highly stereoselective synthesis of 3-butynyl-threo-aldol adducts is achieved from the reaction of allyl allenoate with a chiral bromoborane in the presence of iPr(2)NEt, followed by addition of BF3OEt2 as an additive to scavenge excess base and then aldehydes, whereas isomeric allenyl aldol adducts are formed in the absence of a Lewis acid additive from methyl allenoate.
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