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116836-53-4

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116836-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116836-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,8,3 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 116836-53:
(8*1)+(7*1)+(6*6)+(5*8)+(4*3)+(3*6)+(2*5)+(1*3)=134
134 % 10 = 4
So 116836-53-4 is a valid CAS Registry Number.

116836-53-4Relevant articles and documents

Enantioselective α-Chlorination Reactions of in Situ Generated C1 Ammonium Enolates under Base-Free Conditions

Stockhammer, Lotte,Weinzierl, David,B?gl, Thomas,Waser, Mario

, p. 6143 - 6147 (2021/08/18)

The asymmetric α-chlorination of activated aryl acetic acid esters can be carried out with high levels of enantioselectivities utilizing commercially available isothiourea catalysts under base-free conditions. The reaction, which proceeds via the in situ formation of chiral C1 ammonium enolates, is best carried out under cryogenic conditions combined with a direct trapping of the activated α-chlorinated ester derivative to prevent epimerization, thus allowing for enantioselectivities of up to e.r. 99:1.

Iodobenzene Dichloride in the Esterification and Amidation of Carboxylic Acids: In-Situ Synthesis of Ph3PCl2

Carle, Myriam S.,Shimokura, Grace K.,Murphy, Graham K.

, p. 3930 - 3933 (2016/08/24)

A novel, in-situ synthesis of dichlorotriphenylphosphorane (Ph3PCl2) is accomplished upon combining PPh3and the easily prepared hypervalent iodine reagent iodobenzene dichloride (PhICl2). The phosphorane is selectively generated in the presence of carboxylic acid or alcohol residues to rapidly produce acyl chlorides and alkyl chlorides in high yields. Addition of EtOH, PhOH, BnOH, Et2NH or CH2N2results in the direct synthesis of esters, amides and diazo ketones from carboxylic acids.

Vanilloid receptor ligands, pharmaceutical compositions containing them, process for making them and use thereof for treating pain and other conditions

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Page/Page column 32-33, (2008/12/08)

Compounds corresponding to formula I: which act as vanilloid receptor ligands, pharmaceutical compositions containing such compounds, a process for the producing such compounds, and the use thereof to treat or inhibit pain and/or various other disorders or conditions.

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