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Ring Opening of (η 5 ‐Bicyclo[3.2.0]hepta‐1,3‐dienyl)‐(η 4 ‐tetraphenylcyclobutadiene)cobalt(I) Followed by Cycloaddition
Author(s) -
Butenschön Holger
Publication year - 1993
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.19931260724
Subject(s) - chemistry , bicyclic molecule , cycloaddition , ring (chemistry) , cobalt , medicinal chemistry , stereochemistry , organic chemistry , catalysis
The title reaction, which was detected by a comparison of the DSC analysis of title compound 2 with that of the corresponding bicyclo[3.3.0]octa‐1,3‐dienyl complex 3 , takes place at 200°C with various dienophiles (dimethyl fumarate, dimethyl maleate, diphenylethyne, N ‐methylmaleinimide). 3,4‐Dimethylenecyclopentenyl complex 12 most likely is the key intermediate of the reaction.