2129-79-5Relevant articles and documents
Selective hydrolysis of phosphorus(v) compounds to form organophosphorus monoacids
Ash, Jeffrey,Cordero, Paula,Huang, Hai,Kang, Jun Yong
, p. 6007 - 6014 (2021/07/21)
An azide and transition metal-free method for the synthesis of elusive phosphonic, phosphinic, and phosphoric monoacids has been developed. Inert pentavalent P(v)-compounds (phosphonate, phosphinate, and phosphate) are activated by triflate anhydride (Tf2O)/pyridine system to form a highly reactive phosphoryl pyridinium intermediate that undergoes nucleophilic substitution with H2O to selectively deprotect one alkoxy group and form organophosphorus monoacids.
Controllable phosphorylation of thioesters: Selective synthesis of aryl and benzyl phosphoryl compounds
Xu, Kaiqiang,Liu, Long,Li, Zhaohui,Huang, Tianzeng,Xiang, Kang,Chen, Tieqiao
, p. 14653 - 14663 (2020/12/29)
The controllable phosphorylations of thioesters were developed. When the reaction was catalyzed by a palladium catalyst, aryl or alkenyl phosphoryl compounds were generated through decarbonylative coupling, while the benzyl phosphoryl compounds were produced through deoxygenative coupling when the reaction was carried out in the presence of only a base.
Palladium-catalyzed phosphorylation of benzyl ammonium triflates with P(O)H compounds
Chen, Tieqiao,Huang, Tianzeng,Liu, Long,Wang, Wenqi,Wang, Yuan,Xu, Hanshuang,Xu, Kaiqiang
, (2020/03/03)
A palladium-catalyzed phosphorylation of benzyl ammonium triflates with P(O)H compounds has been developed. Various benzylphosphorus compounds were produced in good to excellent yields with high functional group tolerance. All the three kinds of hydrogen phosphoryl compounds, i.e. H-phosphonates, H-phosphinates and secondary phosphine oxides, were applicable to this reaction. The successful scale-up experiment and one-pot synthetic operation also well demonstrated its practicality.
Copper-catalyzed synthesis of alkylphosphonates from H-phosphonates and N-tosylhydrazones
Miao, Wenjun,Gao, Yuzhen,Li, Xueqin,Gao, Yuxing,Tang, Guo,Zhao, Yufen
, p. 2659 - 2664 (2013/01/15)
A new catalytic system for the alkylation of H-phosphonates and diphenylphosphine oxide with N-tosylhydrazones has been developed. In the presence of copper(I) iodide and base, H-phosphonates react with N-tosylhydrazones to afford the corresponding coupled alkylphosphonates in good to excellent yields without any ligands. Alkylphosphonates can also be prepared in a one-pot process directly from carbonyl compounds without the isolation of tosylhydrazone intermediates.
Efficient esterification of carboxylic acids and phosphonic acids with trialkyl orthoacetate in ionic liquid
Yoshino, Tomonori,Imori, Satomi,Togo, Hideo
, p. 1309 - 1317 (2007/10/03)
An operationally simple, inexpensive, efficient, and environmentally friendly esterification of various carboxylic acids, phosphonic acids, and phosphinic acids with triethyl orthoacetate or trimethyl orthoacetate under neutral conditions in a typical room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate, was successfully carried out to provide the corresponding ethyl esters or methyl esters in high yields.
Inhibitors of protein isoprenyl transferases
-
, (2008/06/13)
Compounds having the formula or a pharmaceutically acceptable salt thereof wherein R1 is (a) hydrogen, (b) loweralkyl, (c) alkenyl, (d) alkoxy, (e) thioalkoxy, (f) halo, (g) haloalkyl, (h) aryl-L2—, and (i) heterocyclic-L2—; R2 is selected from(a) (b) —C(O)NH—CH(R14)—C(O)OR15, (d) —C(O)NH—CH(R14)—C(O)NHSO2R16,(e) —C(O)NH—CH(R14)-tetrazolyl, (f) —C(O)NH-heterocyclic, and(g) —C(O)NH—CH(R14)—C(O)NR17R18; R3 is substituted or unsubstituted heterocyclic or aryl, substituted or unsubstituted cycloalkyl or cycloalkenyl, ?and —P(W)RR3RR3′; R4 is hydrogen, lower alkyl, haloalkyl, halogen, aryl, arylakyl, heterocyclic, or (heterocyclic)alkyl; L1 is absent or is selected from (a) —L4—N(R5)—L5—, (b) —L4—O—L5—, (c) —L4—S(O)n—L5—(d) —L4—L6—C(W)—N(R5)—L5—, (e) —L4—L6—S(O)m—N(R5)—L5—, (f) —L4—N(R5)—C(W)—L7—L5—, (g) —L4—N(R5)—S(O)p—L7—L5—, (h) optionally substituted alkylene, (i) optionally substituted alkenylene, (j) optionally substituted alkynylene (k) a covalent bond, (l) and (m) are inhibitors of protein isoprenyl transferases. Also disclosed are protein isoprenyl transferase inhibiting compositions and a method of inhibiting protein isoprenyl transferases.
