ROSS, J. R.;LAKS, JOANN, S.;WANG, D. LI-CHANG;WOWELL, J. W. ,, SR., SYNTHESIS, BRD, 1985, N 8, 796-798
作者:ROSS, J. R.、LAKS, JOANN, S.、WANG, D. LI-CHANG、WOWELL, J. W. ,, SR.
DOI:——
日期:——
Synthesis of 7-Substituted 5,6-Dimethyl-2,4-dioxo-1,2,4,7-tetrahydropyrrolo[2,3-<i>d</i>][1,3]oxazines
作者:John R. Ross、JoAnn S. Laks、Daniel Li-Chang Wang、J. Walter Sowell, Sr.
DOI:10.1055/s-1985-31355
日期:——
The title compounds 2 are prepared by the cyclization of substituted pyrroles 3 with phosgene in refluxing tetrahydrofuran. In the case of 3a, it is shown that the cyclization can also be achieved after alkylation to give 8.