6798-33-0Relevant academic research and scientific papers
Preparation method of chiral trifluoromethyl amine derivatives
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Paragraph 0058; 0063; 0064; 0065, (2019/01/04)
The invention discloses a preparation method of chiral trifluoromethyl amine derivatives. The structural formula of the chiral trifluoromethyl amine derivatives is shown in a formula I; the preparation method comprises the following steps: mixing carbonyl compounds and N, O-acetal with a chiral tertiary diamine organic small molecule catalyst and acid and then carrying out a reaction so as to obtain the chiral trifluoromethyl amine compounds. The chiral trifluoromethyl amine compounds are prepared by using the chiral tertiary diamine organic small molecule catalyst with a simple structure forcatalyzing without needing a solvent, and are synthesized in one step, so that the preparation method is simple and efficient. (The formula I is described in the description.).
A chiral α - amino acid derivative and its preparation method (by machine translation)
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Paragraph 0105; 0106, (2018/01/03)
The invention discloses a chiral α - amino acid derivative and its preparation method. The invention α - chiral amino acid derivatives, its structural formula shown in formula I: Its preparation method, comprises the following steps: with the carbonyl compound to the N, O - acetal of the mixture with a chiral primary uncle diamine organic small molecule catalyst, strong and weak acid mixing, reaction, to obtain the chiral α - amino acid compounds; the carbonyl compound including aldehyde and/or ketone. The invention chiral α - amino acid ester compound having a simple structure of the chiral primary uncle diamine organic small molecule catalyst catalytic, solvent-free, one-step synthesis, simple, high-efficiency. (by machine translation)
Synthesis of α-trifluoromethyl-α-hydroxycarboxylate dervatives and their phosphorus-containing analogs with the use of fluorinated diazo compounds
Titanyuk,Vorob'eva,Osipov,Beletskaya
experimental part, p. 619 - 623 (2010/10/04)
Approach was developed underlain by the use of fluorinated diazocompounds to the synthesis of derivatives of α-trifluoromethyl-α- hydroxycarboxylic acids and their phosphorus-containing analogs, α-trifluoromethyl-α-hydroxyphosphonic acids. Methyl 2-diazo-3,3,3-trifluoropropionate and diethyl 1-diazo-2,2,2- trifluoroethylphosphonate under the action of catalytic quantities of dirhodium tetraacetate Rh2(OAc)4 easily inserted into the O-H bond leading to the formation of the corresponding products in high yields. Pleiades Publishing, Ltd., 2010.
1-Trifluoromethyl-1-diethoxyphosphoryl carbene: A new synthon for the preparation of CF3-containing α-hydroxy and α-amino phosphonic acid derivatives
Titanyuk, Igor D.,Vorob'eva, Daria V.,Osipov, Sergej N.,Beletskaya, Irina P.
, p. 1355 - 1358 (2007/10/03)
The first synthesis of diethyl 1-diazo-2,2,2-trifluoroethylphosphonate has been developed starting from readily available compounds. The synthetic utility of this compound is demonstrated via its Rh-catalyzed insertion into O-H and N-H bonds to produce CF3-substituted α-hydroxy phosphonic and α-amino, phosphonic acid derivatives. Georg Thieme Verlag Stuttgart.
Expedient synthesis of perhaloaldehyde N-acyl hemiaminals
Ingrassia, Laurent,Mulliez, Michel
, p. 1731 - 1738 (2007/10/03)
Various perhaloaldehyde N-acyl hemiaminals 1 are readily prepared in high yields by condensation of amides 7 with easily available perhaloaldehyde O-ethyl hemiacetals 8 or hydrates 9 in the presence of 5 A molecular sieves.
