Enantioselective Synthesis of Indolines, Benzodihydrothiophenes, and Indanes by C-H Insertion of Donor/Donor Carbenes.

Enantioselective Synthesis of Indolines, Benzodihydrothiophenes, and Indanes by C-H Insertion of Donor/Donor Carbenes.
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DOI:
10.1002/anie.201809344
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发表时间:
2018-11-12
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Shaw JT
Shaw JT
中科院分区:
其他
文献类型:
--
作者:
Souza LW;Squitieri RA;Dimirjian CA;Hodur BM;Nickerson LA;Penrod CN;Cordova J;Fettinger JC;Shaw JT

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We employ a single catalyst/oxidant system to enable the asymmetric syntheses of indolines, benzodihydrothiophenes, and indanes by C–H insertion of donor/donor carbenes. This methodology enables the rapid construction of densely substituted five-membered rings that form the core of many drug targets and natural products. Furthermore, oxidation of hydrazones to the corresponding diazo compounds proceeds in situ, enabling a relatively facile one- or two-pot protocol in which isolation of potentially explosive diazo alkanes is avoided. Regioselectivity studies were performed to determine the impact of sterics and electronics in donor/donor metal carbene C–H insertions to form indolines. This methodology was applied to a variety of substrates in high yield, diastereomeric, and enantiomeric ratios and to the synthesis of a patented indane estrogen receptor agonist with anti-cancer activity.
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