Thiazoloisoquinolines. IV. The Synthesis and Spectra of Thiazolo[4,5-<i>h</i>]- and Thiazolo[5,4-<i>f</i>]isoquinolines. The Ultraviolet and Proton Magnetic Resonance Spectra of Some Substituted Isoquinolines
作者:Alfred Taurins、Richard Kang-Chuan Hsia
DOI:10.1139/v71-674
日期:1971.12.15
5-amino-8-thiocyano- and 8-amino-5-thiocyanoisoquinolines, the thiocyano group was hydrolyzed to the thiol group with 8 N hydrochloric acid and ethanol (1:1).The u.v. and p.m.r. spectra of the intermediate isoquinolines, and the i.r., u.v., and n.m.r. spectra of thiazoloisoquinolines were studied.
由7-氨基异喹啉分四步合成噻唑并[4,5-h]异喹啉:与硫氰酸钾和溴反应生成7-氨基-8-硫氰异喹啉;后者用盐酸环化生成2-氨基噻唑并[4,5-h]异喹啉,然后Sandmeyer反应生成2-氯衍生物,最后用氢碘酸和磷还原。噻唑并[5,4-f]异喹啉由6-氨基异喹啉通过6-氨基-5-硫氰异喹啉制备。2,5-二氨基噻唑并[5,4-h]异喹啉的合成是通过将5-氨基异喹啉得到的5-乙酰氨基-8-氨基异喹啉环化而实现的。在 5-amino-8-thiocyano- 和 8-amino-5-thiocyanoisoquinolines 中,硫氰基用 8N 盐酸和乙醇 (1:1) 水解成硫醇基。 uv 和 pmr