Tetrahedron
Stereoselective synthesis of dihydrothiadiazinoazines and dihydrothiadiazinoazoles and their pyrolytic desulfurization ring contraction
A Al-Etaibi, E John, MR Ibrahim, NA Al-Awadi…
文献索引:Al-Etaibi, Alya; John, Elizabeth; Ibrahim, Maher R.; Al-Awadi, Nouria A.; Ibrahim, Yehia A. Tetrahedron, 2011 , vol. 67, # 34 p. 6259 - 6274
全文:HTML全文
被引用次数: 14
摘要
Intramolecular base catalyzed C–C bond formation led to exclusive stereoselective syntheses of trans-6, 7-dihydro-5H-[1, 2, 4] triazolo [3, 4-b][1, 3, 4] thiadiazines, trans-7, 8- dihydro-6H-[1, 2, 4] triazino [3, 4-b][1, 3, 4] thiadiazin-4-ones, and trans-3, 4-dihydro-2H-[1, 3, 4] thiadiazino [2, 3-b] quinazolin-10-one. trans-6, 7-Dihydro-5H-[1, 2, 4] triazolo [3, 4-b][1, 3, 4] thiadiazines isomerize slowly in CDCl3 and more rapidly in DMSO-d6 into the ...