2-Phenyl-3-(5,6,7,7a-tetrahydro-1<i>H</i>,3<i>H</i>-pyrrolo[1,2-<i>c</i>]oxazol-3-ylidene)-1-propene-1,1-dicarbonitrile and 4-(4-Methoxyphenyl)-2,6-bis(methylthio)pyridine-3-carbonitrile
作者:M. George、S. Das、C. V. Ashokan、N. P. Rath、M. V. George
DOI:10.1107/s0108270197018398
日期:1998.7.15
The reaction of 3-aryl-2-cyano-5,5 -bis (methylthio)penta-2,4-dienenitrile, (1), with L-(-)-2-hydroxymethylpyrrolidine, (2), gave two types of product, the normal substitution product, (3), and a pyridine derivative, (4). The structures of two representative examples, 2-phenyl-3-(5,6,7,7a-tetrahydro-1H,3H-pyrrolo[l,2-c]-oxazol-3-ylidene)-1-propene-1,1-dicarbonitrile, (3a), as its hemibenzene solvate, C17H15N3O.0.5C(6)H(6), and 4-(4-methoxyphenyl)-2,6-bis(methylthio) pyridine-3-carbonitrile, (4b), C15H14N2OS2, have been unambiguously established by X-ray crystallographic analysis. The molecular packing of (4b) involves loosely held dimers, with S1...S1' distances of 3.424(1) Angstrom.