investigated the fixation of CO2 by several amidines in solution and found that simple monocyclic amidines fixed CO2 under dry conditions to quantitatively afford the corresponding bicarbonatesthrough hydrolysis of the zwitterionic adducts by adventitious water. In contrast, linear amidines did not form the bicarbonates under the same conditions, while 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) could not
The Function of Magnesium(II)<i>N</i>,<i>N</i>′-Dicyclohexylamidinide Complexes as a Carbon Dioxide Carrier
作者:Noboru Matsumura、Takayuki Ohba、Hiroo Inoue
DOI:10.1246/bcsj.55.3949
日期:1982.12
It is found that magnesium(II) N,N′-dicyclohexylamidinide complexes are useful reagents for the fixation of carbondioxide and the transfer of the captured carbondioxide moiety to active methylene compounds.
发现镁 (II) N,N'-二环己基脒配合物是用于固定二氧化碳和将捕获的二氧化碳部分转移到活性亚甲基化合物的有用试剂。
Total Synthesis of (−)-Tetrahydropalmatine via Chiral Formamidine Carbanions: Unexpected Behavior with Certain Ortho-Substituted Electrophiles
作者:Mark A. Matulenko、A. I. Meyers
DOI:10.1021/jo951611q
日期:1996.1.1
established using an ortho-substituted hydroxymethylbenzene electrophile protected as a silyl ether to ultimately provide (-)-tetrahydropalmatine in 88% ee. Additionally, we have discovered limitations with ortho-substituted electrophiles in the asymmetric formamidine alkylation. These electrophiles have the potential to disrupt the lithium formamidine chelate and cause the selectivity in the alkylation to