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21947-71-7

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21947-71-7 Usage

General Description

Bis(trans-cinnamic acid)anhydride is a chemical compound formed by the reaction of trans-cinnamic acid with anhydride. It is a white solid at room temperature and is typically used as a reactant in organic synthesis. The compound is known for its potential in the creation of complex molecules and is often employed in the preparation of pharmaceuticals and other biologically active compounds. Bis(trans-cinnamic acid)anhydride exhibits reactivity typical of anhydrides, including its ability to undergo nucleophilic addition reactions. It also has industrial uses in the production of certain plastics and polymers. Overall, bis(trans-cinnamic acid)anhydride is a versatile compound with applications in a range of chemical and pharmaceutical processes.

Check Digit Verification of cas no

The CAS Registry Mumber 21947-71-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,4 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21947-71:
(7*2)+(6*1)+(5*9)+(4*4)+(3*7)+(2*7)+(1*1)=117
117 % 10 = 7
So 21947-71-7 is a valid CAS Registry Number.

21947-71-7SDS

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 cinnamic anhydride

1.2 Other means of identification

Product number -
Other names trans-3-phenyl-2-propenoyl anhydride

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:21947-71-7 SDS

21947-71-7Relevant articles and documents

Molecular conformational analysis, vibrational spectra, NBO analysis and first hyperpolarizability of (2E)-3-phenylprop-2-enoic anhydride based on density functional theory calculations

Sheena Mary,Raju,Panicker, C. Yohannan,Al-Saadi, Abdulaziz A.,Thiemann, Thies,Van Alsenoy, Christian

, p. 638 - 646 (2014)

The conformational behavior and structural stability of (2E)-3-phenylprop-2-enoic anhydride were investigated by using density functional theory. Seventeen possible stable conformations of the title compound were determined and verified with their calcula

Photocatalytic Oxidative [2+2] Cycloelimination Reactions with Flavinium Salts: Mechanistic Study and Influence of the Catalyst Structure

Hartman, Tomá?,Reisnerová, Martina,Chudoba, Josef,Svobodová, Eva,Archipowa, Nataliya,Kutta, Roger Jan,Cibulka, Radek

, p. 373 - 386 (2021/02/01)

Flavinium salts are frequently used in organocatalysis but their application in photoredox catalysis has not been systematically investigated to date. We synthesized a series of 5-ethyl-1,3-dimethylalloxazinium salts with different substituents in the positions 7 and 8 and investigated their application in light-dependent oxidative cycloelimination of cyclobutanes. Detailed mechanistic investigations with a coumarin dimer as a model substrate reveal that the reaction preferentially occurs via the triplet-born radical pair after electron transfer from the substrate to the triplet state of an alloxazinium salt. The very photostable 7,8-dimethoxy derivative is a superior catalyst with a sufficiently high oxidation power (E=2.26 V) allowing the conversion of various cyclobutanes (with Eox up to 2.05 V) in high yields. Even compounds such as all-trans dimethyl 3,4-bis(4-methoxyphenyl)cyclobutane-1,2-dicarboxylate can be converted, whose opening requires a high activation energy due to a missing pre-activation caused by bulky adjacent substituents in cis-position.

Isothiourea-Catalyzed Atroposelective N-Acylation of Sulfonamides

Ong, Jun-Yang,Ng, Xiao Qian,Lu, Shenci,Zhao, Yu

supporting information, p. 6447 - 6451 (2020/09/02)

We report herein an atroposelective N-acylation of sulfonamides using a commercially available isothiourea catalyst, (S)-HBTM, with a simple procedure. The N-sulfonyl anilide products can be obtained in good to high enantiopurity, which represents a new axially chiral scaffold. The application of the product as a chiral iodine catalyst is also demonstrated for the asymmetric α-oxytosylation of propiophenone.

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