Novel intramolecular diels-alder reactions with alkynylthio derivatives of 1,2,4-triazines. New routes to thieno[2,3-]pyridines and thieno[2,3-]pyridines.
作者:Edward C. Taylor、John E. Macor
DOI:10.1016/s0040-4039(00)94842-1
日期:1985.1
S-Alkylation of 1,2,4-triazine-6-thiones with 4-iodobutyne, followed by oxidation to the sulfoxide and intramolecular cycloaddition (at room temperature),gives 2,3-dihydrothieno[2,3-]pyridines, which are readily dehydrated with acetic anhydride to thieno[2,3-]pyridines. The same series of reactions carried out on 1,2,4-triazine-3-thiones leads to thieno[2,3-]pyridines.
TAYLOR, EDWARD C.;MACOR, JOHN E., J. ORG. CHEM., 54,(1989) N1, C. 4984-4989
作者:TAYLOR, EDWARD C.、MACOR, JOHN E.
DOI:——
日期:——
TAYLOR, E. C.;MACOR, JO. E., TETRAHEDRON LETT., 1985, 26, N 20, 2419-2422
作者:TAYLOR, E. C.、MACOR, JO. E.
DOI:——
日期:——
Diels-Alder reactions of 1,2,4-triazines. Synthesis of thieno[2,3-c]pyridines and 3,4-dihydro-2H-thiopyrano[2,3-c]pyridines from 6-(alkynylthio)-1,2,4-triazines