Oxazoline-Based Organocatalyst for Enantioselective Strecker Reactions: A Protocol for the Synthesis of Levamisole
作者:Arghya Sadhukhan、Debashis Sahu、Bishwajit Ganguly、Noor-ul H. Khan、Rukhsana I. Kureshy、Sayed H. R. Abdi、E. Suresh、Hari C. Bajaj
DOI:10.1002/chem.201302007
日期:2013.10.11
catalyze asymmetric Streckerreactions of various aromatic and aliphatic N‐benzhydrylimines with trimethylsilylcyanide (TMSCN) as a cyanide source at −20 °C to give α‐aminonitriles in high yield (96 %) with excellent chiral induction (up to 98 % ee). DFT calculations have been performed to rationalize the enantioselective formation of the product with the organocatalyst in these reactions. The organocatalyst
A New Synthetic Route to 1-Aminoalkylphosphonous Acids
作者:Damian Grobelny
DOI:10.1055/s-1987-28133
日期:——
The addition of bis(trimethylsilyl) phosphonite to N-(diphenylmethyl) imines 1 yields bis(trimethylsilyl) 1-(diphenylmethylamino) alkylphosphonites 2, which can be easily converted into 1-(diphenylmethylamino)-alkylphosphonous acids 3 by treatment with aqueous alcohol.
The synthesis of 1-aminobenzylphosphonic acids from benzylidenediphenylmethylamines, for use as structural units in antithrombotic tripeptides
作者:Donovan Green、Geeta Patel、Said Elgendy、Jehan A. Baban、Goran Claeson、Vijay V. Kakkar、John Deadman
DOI:10.1016/s0040-4020(01)90420-x
日期:1994.4
Acid hydrolyses of 0,0-dimethyl or 0,0-diethyl 1-(diphenylmethylamino) benzylphosphonate intermediates 2, formed from the addition at elevated temperature of dimethyl or diethyl phosphite to benzylidenediphenylmethylamines 1, generates 1-aminobenzylphosphonic acids 3 in good yield.