Montmorillonite KSF clay-promoted synthesis of enantiomerically pure 5-substituted pyrazoles from 2,3-dihydro-4H-pyran-4-ones

被引：17

作者：

Yadav, JS ^{[1
]}

Reddy, BVS ^{[1
]}

Srinivas, M ^{[1
]}

Prabhakar, A ^{[1
]}

Jagadeesh, B ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Div Organ Chem, Hyderabad 500007, Andhra Pradesh, India

来源：

TETRAHEDRON LETTERS | 2004年 / 45卷 / 31期

关键词：

glycals; dihydropyranones; hydrazines; pyrazoles;

D O I：

10.1016/j.tetlet.2004.06.031

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

2,3-Dihydro-4H-pyran-4-ones derived from D-glucal undergo rapid condensation with aryl hydrazines in the presence of montmorillonite KSF clay under mild conditions to afford a novel class of chiral 5-substituted pyrazoles in good yields with high selectivity. The stereochemical assignments of the products were achieved by NMR Studies. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：6033 / 6036

页数：4

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