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55669-73-3

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55669-73-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55669-73-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,6 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55669-73:
(7*5)+(6*5)+(5*6)+(4*6)+(3*9)+(2*7)+(1*3)=163
163 % 10 = 3
So 55669-73-3 is a valid CAS Registry Number.

55669-73-3SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,1-diacetoxy-1-(2,5-dimethoxyphenyl)methane

1.2 Other means of identification

Product number -
Other names 2-Diacetoxymethyl-1,4-dimethoxy-benzol

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:55669-73-3 SDS

55669-73-3Relevant articles and documents

Solvent-free Chemoselective Synthesis of 1,1-diacetates Catalyzed by Iron Zirconium Phosphate

Karimi, Hirbod

, p. 1000 - 1010 (2015/12/01)

In the present study, a mild, rapid, and efficient method for the protection of aldehydes with acetic anhydride (AA) in the presence of iron zirconium phosphate (ZPFe), at room temperature is reported. Selective conversion of aldehydes was observed in the presence of ketones. Under these conditions, different aldehydes bearing electron-withdrawing and electron-donating substituents were reacted with AA and the corresponding 1,1-diacetates (acylals) were obtained in high to excellent yields. The steric and electronic properties of the different substrates had a significant influence on the reaction conditions. Also, the deprotection of 1,1-diacetates has been achieved using this catalyst in water. The catalyst was characterized by several physico-chemical techniques. It was recovered easily from the reaction mixture, regenerated, and reused at least 7 times without significant loss in catalytic activity. This protocol has the advantages of easy availability, stability, reusability of the eco-friendly catalyst, chemoselectivity, simple experimental and work-up procedure, solvent-free conditions and only a stoichiometric amount of AA is needed.

Synthesis of chiral tricarbonylchromium(0) aromatic aldehydes and their asymmetric aldol reaction with acetone

Shi, Jing-Jing,Zhao, Ling-Ling,Zhang, Xiao-Xiao,Wang, Chao,Wan, Yu,Xu, Zhou,Wu, Hui

scheme or table, p. 5319 - 5322 (2012/06/30)

The preparation of chiral tricarbonylchromium(0) aromatic aldehydes was improved in a shorter total time with higher yields comparing with previous methods. Their asymmetric aldol reactions with acetone were studied at room temperature.

Mild and chemoselective synthesis and deprotection of geminal diacetates catalyzed by titanium(IV) halides

Jung, Misuk,Yoon, Jieun,Kim, Hak Sung,Ryu, Jae-Sang

experimental part, p. 2713 - 2720 (2010/10/02)

A novel, mild, and chemoselective method was developed for the preparation of gem-diacetates from aldehydes and acetic anhydride in the presence of titanium(IV) fluoride (1-5 mol%) under solvent-free conditions at room temperature. The reaction showed a high chemoselectivity toward aldehydes in the presence of ketones. Moreover, titanium(IV) fluoride also catalyzed the deprotection of gem-diacetates to the corresponding aldehydes in water. This efficient and simple method has several benefits, including the use of an inexpensive catalyst, solvent-free conditions, mild reaction temperatures, and high yields, which make it both cost-effective and environmentally friendly. Georg Thieme Verlag Stuttgart.

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