„Push‐pull”︁‐substituierte Allene, VIII. 1,2‐Bismethylencyclobutane und Pyrano‐pyrane: Dimere von unterschiedlich substituierten Donor/Akzeptor‐Allenen | Zendy

Saalfrank Rolf W. | Zendy; Paul Winfried | Zendy; Schierling Peter | Zendy

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„Push‐pull”︁‐substituierte Allene, VIII. 1,2‐Bismethylencyclobutane und Pyrano‐pyrane: Dimere von unterschiedlich substituierten Donor/Akzeptor‐Allenen

Author(s) -

Saalfrank Rolf W.,

Paul Winfried,

Schierling Peter

Publication year - 1985

Publication title -

chemische berichte

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 0009-2940

DOI - 10.1002/cber.19851180538

Subject(s) - chemistry , allene , substituent , electrocyclic reaction , ring (chemistry) , acceptor , trifluoromethyl , medicinal chemistry , stereochemistry , bicyclic molecule , catalysis , organic chemistry , physics , alkyl , condensed matter physics

Push‐Pull Substituted Allenes, VIII. 1,2‐Bismethylenecyclobutanes and Pyrano‐pyrans: Dimers from Differently Substituted Donor/Acceptor Allenes Depending on the substituents donor/acceptor‐substituted allenes dimerize to give two different classes of compounds: 1,1‐diethoxy‐3,3‐bis(trifluoromethyl)allene ( 4 ) in a [2 + 2]‐cyclodimerization gives 1,2‐bismethylenecyclobutane 5 and 1,1‐diethoxy‐3‐acylallene 13 dimerizes with substituent participation in a hetero Diels‐Alder reaction and subsequent electrocyclic ring closure reaction to give pyrano 14 .

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