KLEMM, L. H.;JOHNSTONE, SUSAN;TRAN, LONG K., J. HETEROCYCL. CHEM., 26,(1989) N, C. 1519-1522
作者:KLEMM, L. H.、JOHNSTONE, SUSAN、TRAN, LONG K.
DOI:——
日期:——
Synthesis and tautomerism of ethyl 2-(2-benzothiazolyl)-2-(6-purinyl)acetate and related compounds
作者:L. H. Klemm、Susan Johnstone、Long K. Tran
DOI:10.1002/jhet.5570260602
日期:——
Reaction of 6-chloro-9H-(2-tetrahydropyranyl)purine (2d) with the sodium salt of ethyl benzothiazole-2-ace-tate (1) in dimethylformamide effects condensation of the two compounds (with loss of sodium chloride) to give the corresponding ethyl diarylacetate 4 (35%), present largely as an enol chelate tautomer. Isolated as a by-product is 6-(2-aminophenyl-1-thio)-9H-(2-tetrahydropyranyl)-purine (4%),