Synthesis of organophosphorus compounds via silyl esters of phosphorous acids
作者:Kamyar Afarinkia、Charles W. Rees、John I.G. Cadogan
DOI:10.1016/s0040-4020(01)87899-6
日期:1990.1
The addition of trimethylsilyloxy phosphorus (III)derivatives generated in situ to imines at room temperature provides a mild selective and high yielding route to α-aminoalkylphosphorate and α-aminoalkylphenylphosphinate esters. Isocyanates and carbodiimides react similarly to give phosphonoureas and phosphonoguarnidines respectively aldehydes and ketones are much less reactive and cyanides are inert
Asymmetric Synthesis of Diethyl α-Amino-α-Alkyl-Phosphonates by Alkylation of the Chiral Schiff Base Derived from (+)-Ketopinic Acid and Diethylaminomethyl Phosphonate
chiral Schiff base derived from the condensation of (+)-ketopinic acid and diethyl aminomethylphosphonate followed by hydrolysis affords diethyl (S)-α-amino-α-alkyl phosphonates with high enantiomeric excesses when benzyl or allyl halides are used in the alkylation step. An improved procedure for the preparation of diethyl aminomethylphosphonate is also reported.
A Dieckmann Cyclization Route to Piperazine-2,5-diones
作者:Claude Larrivée Aboussafy、Derrick L. J. Clive
DOI:10.1021/jo3007144
日期:2012.6.1
Piperazine-2,5-diones are formed by Dieckmann cyclization (NaH, THF) of substructures of the type CH2-N(R)C(O)CH2N(R′)CO2Ph in which the terminal methylene (CH2) that is adjacent to nitrogen closes onto the carbonyl group of the phenyl carbamate unit at the other end of the chain. R and R′ are alkyl groups, and the terminal methylene is activated by a ketone carbonyl, a nitrile, an ester, or a phosphoryl
Pyrophosphate mimics: Iminodiacetic acid phosphoramidates of deoxyadenosine monophosphate analogues, either bearing an extended aliphatic chain in the amino acid function or a phosphonic acid moiety, serve as potential substrates for HIV‐1 reversetranscriptase. Iminodipropionicacid was found to be an excellent mimic of the pyrophosphate.
One-Pot Synthesis of Dialkyl Arylaminomethyl- and (Arylamino)arylmethylphosphonates and Their<i>N</i>-Acylated Derivatives
作者:L. K. Lukanov、A. P. Venkov
DOI:10.1055/s-1992-26083
日期:——
A convenient synthesis of dialkyl arylaminomethyl- and (arylamino) arylmethylphosphonates 3 and their N-acylated derivatives 5 have been developed, starting from azomethines and phosphorus trichloride in the presence of an alcohol.