The Journal of Organic Chemistry

Equilibrium configurations of azines of esters

D Keus, J Warkentin

Index: Keus, Diane; Warkentin, John Journal of Organic Chemistry, 1984 , vol. 49, # 19 p. 3466 - 3469

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Citation Number: 4

Abstract

(E, dipole alignment)(2, repulsion) and oppoeite to the configuration observed for azines, hydrazones, and semicarbazones of aldehydes and ketopes, where the more bulky group occupies the anti position. With R2= CH3 or CH2CH3, R1 groups smaller than tert-butyl do not force the hydrazonates into the Z configuration and even in the case R'= tert-butyl (R2= CH3), the E isomer predominates in the two-component system (2) at equilibrium. ...