Tetrahedron p. 3317 - 3324 (1980)
Update date:2022-08-05
Topics:
Konar, A.
Gronowitz, S.
Selenolo<3,4-b>selenophene (3) has been synthesized by two different routes using 2,3-bischloromethyl-5-carbomethoxyselenophene (4) or preferably 4-methylseleno-3-selenophene aldehyde (10) as the starting material.In marked contrast to its thiophene analogue thieno<3,4-b>thiophene. 3 was stable.Analysis of the (1)H, (13)C and, in particular, the (77)Se NMR gave strong evidence for the more positive nature of the Se-5 than the Se-1 atom of 3.
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