15.2.1.3.2 Electrophilic AdditionBrHBrH一+-50℃HBrBr
15.2.1.3.2 Electrophilic Addition O O O H2 Pd H2 O O Br H Br H O Br Br H H Br2 -50 o C +
H2H2MoS2H2H2Pd
S S S H2 MoS2 H2 S Cl Cl Cl Cl S Cl 2 N H N H N H H2 Pd H2
300C内式90%外式10%COORCOORSCOORCOORCOORCOOR
S + COOR COOR S COOR COOR -S COOR COOR O + O O O 30oC O O O O H H O H H O O O + 内式90% 外式10％
basCHCICHCl2CHOYH
N H + CHCl 3 base N Cl Cl H N CHCl 2 H N CHO H N H + HN
15.2.1.4 Preparation of Furan,Thiophene andPyrrole(CsH:O4)-CHO600℃n-C4Hio + 4SH2SCH2CH2P2S5P20s + 其它十COONaCOONa
15.2.1.4 Preparation of Furan, Thiophene and Pyrrole (C5 H8 O4) O CHO -CO O n C4 H10 + 4S 600 o C S + H2 S CH2 CH2 COONa COONa + P2 S5 S + P2 O5 + 其它