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Etudes stéréochimiques VII Synthèses diéniques en série résinique; action des peroxoacides et des hydrures doubles
Author(s) -
Gastambide Bernard,
Langlois Nicole
Publication year - 1968
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19680510824
Subject(s) - chemistry , sodium borohydride , epoxide , adduct , stereochemistry , medicinal chemistry , organic chemistry , catalysis
Through a D IELS ‐A LDER reaction between citraconic anhydride ( 1 ) and methyl resinates, the adducts 2a, b, c were obtained. The epoxide 6 , derived from 2a , by acidic methanolysis gave 7 with retention of configuration. The structure of the latter compound was demonstrated by 7 → 8 → 9 , the dilactone 9 being characterized by an electronic interaction and an «M coupling». Sodium borohydride reduced 2d and 2a , giving the diols 3d and 3a , respectively the cis ‐configuration of which was chemically demonstrated.