SYNTHETIC COMMUNICATIONS, 27(9), 1623-1630 (1997 ... generated from knzotriazole and phosgene, reacts with t-hutyl alcohol and p-methoxyknzyl alcohol to give l-(r-hut[~xycarbonyl) henzotriazole (4) and l-(p-methoxy- knzyloxycarhony1)knzotriazole (5). respectively in good ...