Detail of "90719-32-7"

CAS Number:
90719-32-7
Name:
(S)-4-Benzyl-2-oxazolidinone
Molecular Structure:
Formula:
C₁₀H₁₁NO₂
Molecular Weight:
177.20
Synonyms:
(4S)-4-benzyloxazolidin-2-one;S-4-benzyl-2-oxazolidinone;(S)-4-Benzyl-4-oxazolidinone;(S)-4-benzyl-2-oxazolidone;(S)-(-)-4-Benzyl-2-oxazolidincne;(S)-4-Benzyl-2-0xazolidinone;(S)-4-Benzyloxazolidin-2-one;(S)-(-)-4-benzyl-2-oxazolidinone;(S)-4-Benzyl-oxazolidin-2-one;S-(+)-4-Benzyl-2-oxazolidinone;S-4-Bhenyl-2-Oxazolidinone;(4S)-4-Benzyl-1,3-oxazolidin-2-one;(S)-4-(Benzyl)-2-Oxazolidinone;(S)-(+)-4-Benzyl-2-Oxazolidinone;(S)-4-benzyl-2-oxazolidenone;
Density:
1.176 g/cm³
Melting Point:
86-88 °C(lit.)
Boiling Point:
398.8 °C at 760 mmHg
Flash Point:
195 °C
Appearance:
white to light yellow crystal powder
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
24/25-36-26 Details
particular:
particular

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Temperature and enantioseparation by macrocyclic glycopeptide chiral stationary phases: Temperature and enantioseparation by macrocyclic glycopeptide chiral stationary phases. Berthod, Alain; He, Brian Lingfeng; Beesley, Thomas E. (Laboratoire des Sciences Analytiques, CNRS 5180, Universite de Lyon 1, Villeurbanne 69622, Fr.). Journal of Chromatography, A, 1060(1-2), 205-214 (English) 2004 Elsevier B.V. CODEN: JCRAEY. ISSN: 0021-9673. DOCUMENT TYPE: Journal CA Section: 80 (Organic Analytical Chemistry) Section cross-reference(s): 66 Seventy-one chiral compds. were sepd. on four macrocyclic glycopeptide chiral selectors: teicoplanin, its aglycon, ristocetin A and vancomycin, using three possible sepn. modes: reversed phase with methanol/buffer mobile phases, normal phase with hexane/ethanol mobile phases and polar ionic mode (PIM) with 100% methanol mobile phase with trace amts. of acid and/or base. These 148 sepns. were studied in a 5-45°C temp. range. Peak efficiencies always increased with temp., but in only 17% of the sepns. studied a small increase of the enantioresoln. factor was obsd. In the majority (83%) of the cases, the enantioresoln. decreased or even vanished when temp. increased. All 148 Van't Hoff plots were linear showing that the selector did not change in the temp. range studied. The calcd. enthalpy and entropy variations showed that the interaction of the solute with the stationary phase was always enthalpy driven with normal and reversed mobile phases. 90719-32-7 and 23031-25-6 which are cas registry numbers of substances are two of reagents here. It could be enthalpy as well as entropy driven with PIM mobile phases strongly dependent on the solute. The plots of D(DH) vs. D(DS) were linear in most cases (enthalpy entropy compensation). This observation cannot be used to give clear information on chiral recognition mechanisms, but it allowed identifying specific stationary phase-solute interactions because the points corresponding to the resp. thermodn. parameters were clearly delineated from the general compensation lines. .

A versatile, enantioselective, stereocontrolled synthesis of (1S,2R)-imidazoleglycerol: A versatile, enantioselective, stereocontrolled synthesis of (1S,2R)-imidazoleglycerol. Paz, Manuel M.; Correa, Juan F.; Cabeza, M. Isabel; Sardina, F. Javier (Dep. 186502-18-1 and 90719-32-7 are cas registry numbers. These chemicals are also mentioned in this article. Quimica Organica, Univ. Santiago Compostela, Santiago Compostela 15706, Spain). Tetrahedron Letters, 37(51), 9259-9262 (English) 1996 Elsevier. CODEN: TELEAY. ISSN: 0040-4039. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) An efficient (21% overall yield), enantioselective and diastereoselective, 11-step synthesis of (1S,2R)-imidazoleglycerol was developed. The key steps were the stereoselective hydroxylation of an acyloxazolidinone enolate, the alkylation of a thioester with (MOMOCH2)2CuLi and the stereodivergent redn. of the resulting ketone. For example, the redn. and subsequent substitution of I gave II. Subsequent elongation of II gave III which was deprotected to give the title compd., i.e., [S-(R*,S*)]-1-(1H-imidazol-4-yl)-1,2,3-propanetriol (IV). .

Detail of "90719-32-7"

(S)-4-Benzyl-2-oxazolidinone

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