上游原料
4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi-1,3,2-dioxaborolane; Bis(pinacolato)diboron; Diboron pinacol estermethyl 2-amino-5-bromobenzoate2-(2-amino-5-bromophenyl)-2-propanol6-bromo-2,4,4-trimethyl-1,4-dihydro-2H-3,1-benzoxazine2,4,4-trimethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,4-dihydro-2H-3,1-benzoxazine4-bromo-2-thiophenecarbonitrile
