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143140-06-1

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  • (3S-CIS)-(+)-2,3-DIHYDRO-7A-METHYL-3-PHENYLPYRROLO[2,1-B ]OXAZOL-5(7A H)-ONE

    Cas No: 143140-06-1

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143140-06-1 Usage

Chemical Properties

cream crystalline powder

Uses

High levels of asymmetric induction have been obtained with this chiral bicyclic lactam in cycloadditions, alkylations, conjugate additions, annulations, and dihydroxylations.

Check Digit Verification of cas no

The CAS Registry Mumber 143140-06-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,1,4 and 0 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 143140-06:
(8*1)+(7*4)+(6*3)+(5*1)+(4*4)+(3*0)+(2*0)+(1*6)=81
81 % 10 = 1
So 143140-06-1 is a valid CAS Registry Number.
InChI:InChI=1/C13H13NO2/c1-13-8-7-12(15)14(13)11(9-16-13)10-5-3-2-4-6-10/h2-8,11H,9H2,1H3/t11-,13-/m1/s1

143140-06-1 Well-known Company Product Price

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  • Aldrich

  • (458570)  (3S-cis)-(+)-2,3-Dihydro-7a-methyl-3-phenylpyrrolo[2,1-b]oxazol-5(7aH)-one  98%

  • 143140-06-1

  • 458570-250MG

  • 546.39CNY

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143140-06-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name (3S,7aR)-7a-methyl-3-phenyl-2,3-dihydropyrrolo[2,1-b][1,3]oxazol-5-one

1.2 Other means of identification

Product number -
Other names (3S,7aR)-7a-methyl-3-phenyl-2H,3H-3-pyrrolino[2,1-b]1,3-oxazolidin-5-one

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:143140-06-1 SDS

143140-06-1Relevant articles and documents

Single and double diastereoselection in azomethine ylide cycloaddition reactions with unsaturated chiral bicyclic lactams

Fray,Meyers

, p. 3362 - 3374 (2007/10/03)

Double diastereoselectivity data were analyzed to provide insight into the structural features that influence π-facial selectivity in 1,3-dipolar cycloadditions of chiral and achiral azomethine ylides to chiral, unsaturated bicyclic lactams. Three major steric contributions to the differences in stability (ΔΔG(≠)) between competing cycloaddition transition states were identified. The first major set of steric interactions involve that between the dipoles and the substituents on the left hemisphere (R2) and concave faces of the bicyclic lactams. This effectively hindered both α- and β-approaches in the nonextended transition states. The second major steric interaction was provided by the nonbonded interactions (i) between the R1 angular substituent on the bicyclic lactam and the π-system of the dipole. This interaction was shown to be very significant, causing reversal in π-facial attack of chiral and achiral dipoles when the angular substituent is changed from phenyl or methyl to hydrogen. The high diastereoselectivity observed now opens a route to highly substituted chiral, nonracemic pyrrolidines.

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