Divergent stereocontrol of acid catalyzed intramolecular aldol reactions of 2,3,7-triketoesters: synthesis of highly functionalized cyclopentanones.
Divergent stereocontrol of acid catalyzed intramolecular aldol reactions of 2,3,7-triketoesters: synthesis of highly functionalized cyclopentanones.
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DOI:
10.1021/ol301317a
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发表时间:
2012-07-20
期刊:
影响因子:
5.2
通讯作者:
Doyle, Michael P.
中科院分区:
文献类型:
--
作者:
Phong Truong;Shanahan, Charles S.;Doyle, Michael P.
The intramolecular acid catalyzed aldol cyclization of 2,3,7-triketoesters formed from ζ-keto-α-diazo-β-ketoesters provides highly functionalized cyclopentanones with good diastereoselectivity in high overall yields via kinetically controlled and stereodivergent catalytic processes. Lewis acid catalysis gives high selectivity for the 1,3-anti tetrasubstituted cyclopentanones, whereas Brønsted acid catalysis produces the corresponding 1,3-syn diastereomer.
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