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AN EFFICIENT GENERAL METHOD FOR ESTERIFICATION OF AROMATIC CARBOXYLIC ACIDS
Abstract Treatment of variety of aromatic carboxylic acids with alcohols in the presence of thionyl chloride results in excellent yields of corresponding esters. This esterification system is… Expand
A concise synthesis of l-4,4-difluoroglutamine
Abstract l -4,4-Difluoroglutamine 1 of high optical purity was prepared from ( R )-Garner's aldehyde 2 using Reformatsky reaction as the key step for introducing the fluorinated side-chain.
Facile route to 3,5-disubstituted morpholines: enantioselective synthesis of O-protected trans-3,5-bis(hydroxymethyl)morpholines.
Trans-3,5-Bis(benzyl/tert-butyldiphenylsilyloxymethyl)morpholines, promising candidates for the C(2)-symmetric class of chiral reagents, were prepared with excellent optical purity and extended to the synthesis of potentially useful chiral building block. Expand
Synthesis of chiral C/N-functionalized morpholine alcohols: study of their catalytic ability as ligand in asymmetric diethylzinc addition to aldehyde
Abstract A broad variety of chiral C/N-functionalized morpholine alcohols sharing a common structural motif in the 3-(hydroxymethyl)morpholine 6 were prepared from enantiomerically pure serine for… Expand
γ-Fluorinated analogues of glutamic acid and glutamine
Summary. γ-Fluorinated analogues of glutamic acid and glutamine are compounds of biological interest. Syntheses of such compounds are extensively reviewed in this article. 4-Fluoroglutamic acid was… Expand
A simple and efficient diastereoselective Strecker synthesis of optically pure α-arylglycines
Abstract A simple and economical method for the synthesis of highly functionalised α-amino nitriles, precursors to α-arylglycines with high optical purity is reported. For this purpose, (R) or… Expand
Synthesis of cis-5-Trifluoromethylproline from l-Glutamic Acid
The diastereoselective synthesis of cis-5-trifluoromethylproline (5-Tfm-Pro) from l -glutamic acid is described. 5-Tfm-Pro could be obtained through a seven-step linear sequence. Trifluoromethylation… Expand
An Efficient General Method for Esterification of Aromatic Carboxylic Acids.
Corrigendum to “A concise synthesis of l-4,4-difluoroglutamine”