Intramolecular cycloaddition of homochiral nitrile imines 5, generated in situ from base treatment of the corresponding hydrazonoyl chlorides 4, involves diastereoselective formation of the title compounds in the enantiomerically pure form. (C) 1999 Elsevier Science Ltd. All rights reserved.
The first case of asymmetric induction in intramolecular nitrile imine cycloadditions: synthesis of enantiopure 3-substituted 6-oxo-2,3,3a,5-tetrahydro-4-carbomethoxy-furo[3,4-c]pyrazoles / G. Broggini, L. Garanti, G. Molteni, G. Zecchi. - In: TETRAHEDRON-ASYMMETRY. - ISSN 0957-4166. - 10:3(1999), pp. 487-492. [10.1016/S0957-4166(99)00012-9]
The first case of asymmetric induction in intramolecular nitrile imine cycloadditions: synthesis of enantiopure 3-substituted 6-oxo-2,3,3a,5-tetrahydro-4-carbomethoxy-furo[3,4-c]pyrazoles
G. Molteni;
1999
Abstract
Intramolecular cycloaddition of homochiral nitrile imines 5, generated in situ from base treatment of the corresponding hydrazonoyl chlorides 4, involves diastereoselective formation of the title compounds in the enantiomerically pure form. (C) 1999 Elsevier Science Ltd. All rights reserved.
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