作者:Jan Pawlas、Per Vedsø、Palle Jakobsen、Per O. Huusfeldt、Mikael Begtrup
DOI:10.1021/jo010395k
日期:2002.1.1
3-chloropyrazolo[3,4-c]isoquinoline 6, 1,2-dihydro-1,2-dimethylpyrazolo[3,4-c]quinolin-3-one 8, and 1,2-dihydro-1,2-dimethylpyrazolo[3,4-c]isoquinolin-3-one 10 were obtained by acid-induced nucleophilic aromatic substitution (S(N)H) of H-3 in N-hydroxypyrazolo[3,4-c]quinoline 1b and in N-hydroxy pyrazolo[3,4-c]isoquinoline 3b. In the acid-induced chlorination, 3b was far more reactive than 1b, whereas the
3-氯吡唑并[3,4-c]喹啉5,3-氯吡唑并[3,4-c]异喹啉6,1,2-二氢-1,2-二甲基吡唑并[3,4-c]喹啉-3-一8 ,通过酸诱导N-3羟基吡唑并H-3的亲核芳香取代(S(N)H)得到1,2-二氢-1,2-二甲基吡唑并[3,4-c]异喹啉-3-酮10 [3,4-c]喹啉1b和N-羟基吡唑并[3,4-c]异喹啉3b。在酸诱导的氯化反应中,3b比1b更具活性,而相关的N-羟基吡唑并[4,3-c]喹啉2b和N-羟基吡唑并[4,3-c]异喹啉4b对S(N H在相同条件下。