123445-53-4Relevant articles and documents
Straightforward Synthesis of 1-Amino-2,2-dialkylcyclopropanecarboxylic Acids via Selective Saponification of 2,2-Dialkylcyclopropane-1,1-dicarboxylic Esters and Curtius Rearrangement
De Kimpe, Norbert,Boeykens, Marc,Tehrani, Kourosch Abbaspour
, p. 8215 - 8219 (1994)
Selective monosaponification of dimethyl 2,2-dialkylcyclopropane-1,1-dicarboxylic esters afforded the corresponding 2,2-dialkyl-1-(methoxycarbonyl)cyclopropane-1-carboxylic acids, which were rearranged with diphenyl phosphoroazidate via a modified Curtius-type reaction to give methyl 2,2-dialkyl-1-cyclopropanecarboxylic esters.Selective deprotection of the carbamate or methyl cyclopropanecarboxylic ester was worked out, giving rise to a whole variety of ACC analogues.Straightforward ways to 1-amino-2,2-dialkylcyclopropanecarboxylic acids (2,2-dialkyl-ACC's) were developed.
SYNTHESIS OF 2,2-DIALKYL-1-AMINOCYCLOPROPANECARBOXYLIC ACIDS FROM Α-CHLOROIMINES
De Kimpe, Norbert,Sulmon, Paul,Brunet, Pascal,Lambein, Fernand,Schamp, Niceas
, p. 1863 - 1866 (1989)
2,2-Dialkyl-ACC analogues, i.e. potential plant growth regulators, were synthesized via straightforward cyclopropanation of α-chloroimines.
Synthesis of 2,2-dialkylcyclopropylamines from β-chloroimines and application towards the synthesis of 1-amino-2,2-dialkylcyclopropane-carboxylic acids
De Kimpe,Sulmon,Boeykens
, p. 3389 - 3406 (2007/10/07)
Base-induced 1,5-dehydrochlorination of β-chloroimines, having a relatively acidic hydrogen atom at carbon-1 of the N-substituent (e.g. benzyl, methoxycarbonylmethyl, α-methylbenzyl), afforded N-cyclopropylimines which were easily hydrolyzed into cyclopropylamines. This synthetic methodology was applied to the synthesis of the potentially plant growth regulating 1-amino-2,2-dialkylcyclopropanecarboxylic acids via oxidation with catalytic ruthenium(IV)oxide/sodium periodate of suitably N-protected 1-aryl-2,2-dialkylcyclopropylamines.
Synthesis of 1-amino-2,2-dialkylcyclopropanecarboxylic acids from β-chloroaldimines
De Kimpe,Sulmon,Stevens
, p. 4723 - 4738 (2007/10/02)
A variety of hydrogen cyanide adducts of β-chloroaldimines using acetone cyanohydrin were prepared. The reactive behaviour of these α-amino-γ-chloronitriles towards bases was investigated with the aim to generate 1-aminocyclopropanecarbonitriles, which ar
Synthesis of 2,2-Dialkyl-1-aminocyclopropanecarboxylic Acids from α-Chloro Ketimines
Kimpe, Norbert De,Sulmon, Paul,Brunet, Pascal
, p. 5777 - 5784 (2007/10/02)
2,2-Dialkyl-1-aminocyclopropanecarboxylic acids, abbreviated as 2,2-dialkyl Acc's, are potential plant growth regulators which were synthesized by ring closure of α-chloro imines.The synthetic scheme leading to these Acc analogues entails a newly developed regiospecific synthesis of tertiary α-chloro ketimines, the trapping with cyanide of a transient Favorskii derived cyclopropylideneamine, and the hydrolytic conversion of 1-(N-tert-butylamino)-2,2-dialkylcyclopropanecarbonitriles into the title compounds.
SYNTHESIS OF 2,2-DIMETHYL-1-AMINOCYCLOPROPANECARBOXYLIC ACID FROM β-CHLOROIMINES
Kimpe, Norbert De,Sulmon, Paul,Schamp, Niceas
, p. 5029 - 5032 (2007/10/02)
2,2-Dimethyl-ACC, a potential plant growth regulator, was synthesized by cyclopropanation of β-chloroimines.