... Sei. US.A. ... 1991, 88, 4001-4004. 0002-786319211514-3528$03.00/0 0 1992 American Chemical Society Page 2. ... (10) (a) Prepared from (4-aminopheny1)acetic acid by treatment with BOC-ON ( 2 4 ((tert-butoxycarbonyl)oxy)imino)-2-phenyla~tonitrile; Aldrich Chemical Co.) in ...