These skeletal alkylcarbonation (SAC) reactions are consistent with an aldol-type condensation between the RCO group and open-face hydrogen atoms on the dicarbaborane 1, which is associated with the insertion of the carbonyl carbon atom into the structure of arachno-6,9-C2B8H14 (1) under elimination of three extra hydrogen atoms as H2O and HCl. The reactions thus result in an effective R–tricarbaborane
之间的反应蛛网膜下腔-6,9--C 2乙8 ħ 14(1)和选定的酰基
氯化物,RCOCl,在PS(PS =“质子海绵”,1,8-二甲基
氨基
萘)在CH存在2
氯2为回流24小时,然后在0°C下用浓H 2 SO 4原位酸化,生成一系列中性的烷基和芳基三
糖脂8-R-
氨基-7,8,9-C 3 B 8 H 11(2)(其中R = CH 3,图2a ; c ^ 2 ħ 5,图2b; Ñ -C 4 ħ 9,2C ; Ç 6 ħ 5,2D ; 4-CL-C 6 H ^ 4,2E ; 4-
溴-C 6 H ^ 4,2F ; 4-IC 6 ħ 4,2克; 1-C 10 ħ 7,2H ; 和2-C 10 ħ 7,2I)。芳基衍
生物的收率最高(80-95%),而相应的烷基取代化合物的收率较低(60-70%)。这些骨架烷基
碳酸化(
SAC)反应与RCO基团与双碳
硼烷1上的敞开氢原子之间的醛醇缩合相一致,这与将羰基碳原子插入Arachno