救命招,不知可不可行,高手请解答? 恩 不换马甲了 can syned, zhurnal organicheskoi khimii, 25(12), 2603-8; 1989 first to syn 2,6-diphenyl-pyrylium perchlorate (1:1), then according to lit khimiya geterotsiklicheskikh soedinenii, (2), 182-7; 1987 or khimiya geterotsiklicheskikh soedinenii, (7), 893-8; 1983. u can get the target comp. through the yield is not so high, and also the bird patents wirtten in russian. not so common, good luck. 查看更多