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Trithia- and dithiaselenapentalenes from benzylidene-1,2-dithioles and heterocumulenes (1997)

Ding, Yunxiang ; Kong, Jie ; Reid, David H.

New York, NY [u.a.] : Wiley-Blackwell

Heteroatom Chemistry 8 (1997), S. 233-244

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ISSN: 1042-7163

Keywords: Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Deprotonation of the 5-aryl-3-benzyl-1λ4,2-dithiol-1-ylium iodides (6a-6d) obtained by reaction of the 1-aryl-4-phenylbutan-1,3-diones (5a-5d) with hydrogen sulfide and iodine in ethanol gave the stable 5-aryl-3-benzylidene-3H-1,2-dithioles (3a-3d), respectively. The dithioles (3a-3d) underwent thermal cycloaddition reactions with isoselenocyanates and isothiocyanates to give the 2-(substituted amino)-5-aryl-3-phenyl-6,6aλ4-dithia-1-selenapentalenes (7a-7h) andthe 2-(substituted amino)-5-aryl-3-phenyl-1,6,6aλ4-trithiapentalenes (8a-8l), respectively. The dithioles(3a-3d) reacted with isocyanates to give the N-substi-tuted-2-phenyl-2-(5-aryl-3H-1,2-dithiol-3-ylidene) acetamides (11a-11h). © 1997 John Wiley & Sons, Inc. Heteroatom Chem 8: 233-244, 1997.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

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