ISSN:
0009-2940
Keywords:
Heterodiynes, medium-sized
;
[2.2](2,5)-Thiophenophanes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Synthesis of Heterocyclic Diynes and their Reaction with CpCo(CO)2The preparation of the heterocyclic diynes 1,6-dithia-3,8-cyclodecadiyne (1b), thia-3,8-cyclodecadiyne (11), 1-thia-6-selana-3,8-cyclodecadiyne (12), oxa-3,8-cyclodecadiyne (13), 1,6-dioxa-3,8-cyclodecadiyne (14), 1-oxa-6-thia-3,8-cyclodecadiyne (15), 1,6-diselena-3,8-cyclodecadiyne (26), thia-3,9-cyclounde-cadiyne (22a), thia-3,13-cyclopentadecadiyne (22b) and its selena analogues 23a, 23b is described. The thia and monoselena compounds are obtained by a thia- or selenacyclization of the corresponding dibromides. Compound 26 has been obtained by a Misumi coupling reaction. The thiacycloalkadiynes of medium-sized rings (10, 11) react with CpCo(CO)2 to yield [2,2](2,5)thiophenophane derivatives. Acyclic thiadialkynes or thiacycloalkadiynes of larger ring size (22b) with CpCo(CO)2 by [2 + 2 + 2] cycloaddition.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240218
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