期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 42, 页码 14737-14741出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201502942
关键词
borates; esters; homogeneous catalysis; silanes; triethylboranes
资金
- National Natural Science Foundation of China [21422209, 21432011, 21421091]
A combination of the abundant and low-cost triethylborane and sodium alkoxide generates a highly efficient catalyst for reduction of esters, as well as ketones and aldehydes, to alcohols using an inexpensive hydrosilane under mild conditions. The catalyst system exhibits excellent chemoselectivity and a high level of functional group tolerance. Mechanistic studies revealed a resting state of sodium triethylalkoxylborate that is the product of the reaction of BEt3 with sodium alkoxide. This borate species reacts with hydrosilane to form NaBEt3H, which rapidly reduces esters.
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