Synthesis of Non-Symmetric Functionalized Polyfluoroalkyl
Phosphites
摘要:
Two ways for the synthesis of new representatives of non-symmetric organic phosphites with polyfluoroalkyl substituents were developed based on organic dichlorophosphites. The reaction of polyfluoroalkyl dichlorophosphites with allyl alcohol, proceeding at a temperature of -10-22 degrees C (2 h) in the presence of triethylamine, gave diallyl polyfluoroalkyl phosphites in a yield of 75-77%. Under similar conditions (-30-22 degrees C, 2-4 h, Et3N), alkyl (or aryl) dichlorophosphites reacted with polyfluoroalkanols to form alkyl (or aryl) bis(polyfluoroalkyl) phosphites (yield 56-67%). Unlike diallylpolyfluoroalkyl- and alkylbis(polyfluoroalkyl) phosphites, arylbis(polyfluoroalkyl) phosphites are symmetrized under storage conditions (room temperature, inert atmosphere), forming the corresponding triaryl- and tris(polyfluoroalkyl) phosphites.
Synthesis and separation of diastereomers of <i>O</i>-(2,2,2-trifluoroethyl)-3′,5′-dinucleoside phosphates
作者:Weide Luo、Elena Atrazheva、Nancy Fregeau、William H. Gmeiner、J. William Lown
DOI:10.1139/v94-193
日期:1994.6.1
The synthesis, diastereomeric separation, and characterization are described for a series of novel O-(2,2,2-trifluoroethyl)-3′,5′-dinucleoside phosphates, required for incorporation into antisense probes in the magnetic resonance imaging investigation of biodistribution. Preliminary assignment of the absoluteconfiguration of the Rp and Sp diastereomers is made on the basis of 31 P NMR spectra.
描述了一系列新型 O-(2,2,2-三氟乙基)-3',5'-双核苷磷酸酯的合成、非对映体分离和表征,在生物分布的磁共振成像研究中需要纳入反义探针. Rp 和 Sp 非对映异构体的绝对构型的初步分配是基于 31 P NMR 光谱进行的。
Konovalova, I.V.; Burnaeva, L.A.; Loginova, I.V., Journal of general chemistry of the USSR, 1991, vol. 61, # 11.1, p. 2298 - 2302
Synthesis of Amido- and Diamidophosphites with Polyfluoroalkyl Substituents
作者:S. F. Malysheva、N. K. Gusarova、N. A. Belogorlova、A. M. Nalibayeva、S. V. Yasko、N. A. Chernysheva、S. I. Verkhoturova、G. K. Bishimbayeva、B. A. Trofimov
DOI:10.1134/s1070363220020103
日期:2020.2
Bis(polyfluoroalkyl) chlorophosphites and polyfluoroalkyl dichlorophosphites react easily with secondary amines (from -40 to -22 degrees C, 1-3 h, CH2Cl2) in the presence or absence of triethylamine to form the corresponding bis(polyfluoroalkyl) diorganylamidophosphites or bis(diorganylamido) polyfluoroalkyl phosphites in the yield of up to 74%. Bis(polyfluoroalkyl) diorganylamidophosphites were also synthesized from diorganylamidodichlorophosphites and polyfluoroalkanols (-25 to -22 degrees C, 2 h, Et3N-CH2Cl2) with a yield of 56-60%.
MAHMOOD T.; SHREEVE J. M., INORG. CHEM., 25,(1986) N 21, 3830-3837