5期 陈兴幸等:动态共价键高分子材料的研究进展 Table 1 General reversible covalent reaction in polymer synthesis Reaction name Reaction equation Carbon radical exchange R1-R2+ RrR R1-R4+R3=R2 Olefin metathesis 26.2 DA reaction 2 Disulfide bond R2SI + R:SS/R [32] Thiuram disulfide 33] Donate + [34,35] ranscarbamoylation Transesterification [2,39-41] koxyamine exchan N-O-R,+R N-O-Ra +R -O-R Transiminination RE N是-+BN是-=RN是-+g-N 46-48] Transoximization R1O-N [49-51 R3-O-N CNTR= RI 思、想 52,53] Urea exchange Transaminate rINH= Transalkylation [55] Aminal formation + Boronic ester formation Urazole forma [60] Siloxane equilibration R5 =R-s O-si-Ru+ Rs-siO-Si-Rs (61-631Table 1  General reversible covalent reaction in polymer synthesis Reaction name Reaction equation Ref. Carbon radical exchange R1 R2 + + R3 R4 R1 R4 R3 R2 [22 – 25] Olefin metathesis R1 R2 R3 R4 R1 R1 R4 R3 R2 R3 R4 R4 R3 R2 R2 R1 + + [26, 27] DA reaction O R1 O O N R2 R1 O O R2 O + [28, 29] Disulfide bond formation R2 S R1 S + R3 R4 R2 R4 R3 S S S R1 S S S + [30, 31] Disulfide-thiol exchange R1 R3 R3 SH R1 S R2 S R SH S S 2 + + [32] Thiuram disulfide exchange S S R2 S S + R3 S S R4 S S R1 S S R4 S S + R3 S S R2 S S R1 [33] Trithiocarbonate exchange R1 R2 R1 S R2 S S S S S + R1 S S S R4 R2 S S S + R3 [34, 35] Transcarbamoylation R1 R2 R3 R4 O O + O O R1 R4 R3 O + O R2 H N H N H N H N [36 – 38] Transesterification R1 R2 R3 R4 R3 R2 O O O O O O O + R1 O + R4 [2, 39 – 41] Alkoxyamine exchange R1 N O R2 R3 N O R4 + R1 N O R4 + R3 N O R2 [42 – 45] Transiminination R1 N H C R2 + R3 N H C R4 R1 N H C R4 + R3 N H C R2 [46 – 48] Transoximization R1 O N H C R2 R3 O N H + C R4 R1 O N H C R4 R3 O N H + C R2 [49 – 51] Hydrazone exchange R1 H N N H C R2 O R3 H N N H C R4 O + R1 H N N H C R4 O R3 H N N H C R2 O + [52, 53] Urea exchange R1 H N N R3 O R2 + R4 H N N R6 O R5 R1 H N N R6 O R5 + R4 H N N R3 O R2 [18] Transamination X O HN R1 + R2NH2 X O HN R1NH2 R2 + [54] Transalkylation N N N R1 R2 Br− N N N R3 Br− + Br N N N R5 R6 Br− N N N R1 Br− N N N R6 R5 Br− + Br N N N R3 R4 Br− R4 R2 [55] Aminal formation R2 R3 R3 R2 R1 R1 N N H2O O NH NH + + R1 R1 [56, 57] Boronic ester formation B O O R1 R2 R3 + HO R4 HO R5 B O O R1 R4 R5 + HO R2 HO R3 [58, 59] Urazole formation R2 N + N N O N O R1 R1 O N O NH N R2 N H [60] Siloxane equilibration R Si 2 O Si R5 R1 R3 R6 R4 R Si 8 O Si R11 R7 R9 R12 R10 + R Si 2 O Si R11 R1 R3 R12 R10 R Si 8 O Si R5 R7 R9 R6 R4 + [61 – 63] 5 期 陈兴幸等：动态共价键高分子材料的研究进展 471