Zur Kenntnis des Kohlenstoffringes. 81. Mitteilung [1]. Acetolyse des 3,3,8,8-Tetramethyl-cyclodecyl-p-toluolsulfonates
作者:V. Prelog、E. Troxler、H. H. Westen
DOI:10.1002/hlca.19680510723
日期:1968.10.31
Acetolysis of 3,3,8,8-tetramethyl-cyclodecyl p-toluenesulfonate yields 3,3,8,8-tetramethyl-trans-cyclodecene-(1) (6), 4,4,9,9-tetramethyl-cis-cyclodecene-(1) (4), and 4,4,9,9-tetramethyl-trans-cyclodecene-(1) (5). In each case 12 to 13 per cent of the product involves transannular hydride shifts. The rate constant k25 = 4,35 · 10−5 s−1 is approximately the same as for cyclodecyl p-toluenesulfonate
对甲苯磺酸3,3,8,8-四
甲基-环癸基
酯的乙酰化反应可得到3,3,8,8-四
甲基-反-环
癸烯- (1)(6),4,4,9,9-四
甲基-顺式-环
癸烯-(1)(4)和4,4,9,9-四
甲基-
反式-环癸烯- (1)(5)。在每种情况下,有12%到13%的产品涉及跨环
氢化物的转变。速率常数k 25= 4.35·10 -5 s -1与
对甲苯磺酸环癸基
酯大致相同。根据构象分析讨论了该反应。