Transition-state stereochemistry in the diene condensation of trans-1-alkoxy-1,3-butadienes with carbonyl compounds |
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| Authors: | B S Él'yanov S M Makin Yu E Raifel'd |
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| Institution: | 1. N. D. Zelinskii Institute of Organic Chemistry of the Academy of Sciences of the USSR, Moscow
2. M. V. Lomonosov Moscow Institute of Fine Chemical Technology, USSR
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| Abstract: | | 1. |
Increased pressure results in an increase in the proportion of the cis isomer in adducts formed by diene condensation of trans-1-methoxy- and 1-ethoxy-1,3-butadiene with methyl, ethyl, and n-butyl glyoxylate and acetaldehyde.
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The transition state in these reactions structurally resembles the parallel-plane model of the prereaction complex rather than adduct.
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