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141694-63-5

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141694-63-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141694-63-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,6,9 and 4 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 141694-63:
(8*1)+(7*4)+(6*1)+(5*6)+(4*9)+(3*4)+(2*6)+(1*3)=135
135 % 10 = 5
So 141694-63-5 is a valid CAS Registry Number.

141694-63-5Relevant articles and documents

Copper-catalyzed cross-coupling of amino acid-derived amides with (Z)-vinyl iodides: Unexpected solvent effect and preparation of plocabulin

Wang, Leiming,Lei, Xinsheng,Wang, Quanrui,Li, Yingxia

, (2021/02/01)

A copper-catalyzed cross-coupling reaction of amino acid-derived amides and (Z)-vinyl iodide was studied to improve a key step in the synthesis of plocabulin, a novel microtubule destabilizer agent of marine origin. The study revealed a profound solvent effect with 1,2-dimethoxyethane (DME), which gave consistently high yields across a large variety of the amide and (Z)-vinyl iodide substrates. The protocol was successfully utilized in the preparation of plocabulin and provided a significantly improved yield.

Sterically biased 3,3-sigmatropic rearrangement of azides: Efficient preparation of nonracemic α-amino acids and heterocycles

Gagnon, David,Lauzon, Sophie,Godbout, Cedrickx,Spino, Claude

, p. 4769 - 4771 (2007/10/03)

(Chemical Equation Presented) Homochiral α-amino acids, heterocycles, and carbocycles are efficiently constructed via a short sequence of reactions starting from the chiral auxiliary p-menthane-3-carboxaldehyde. The key feature of the sequence is a highly selective tandem Mitsunobu/3,3-sigmatropic rearrangement of hydrazoic acid that procures enantiomerically enriched allylic azides. The sequence is either terminated by oxidative cleavage to provide amino acids or by ring-closing metathesis to provide heterocycles or carbocycles bearing nitrogen.

A new Procedure for the Synthesis of (E)-1-iodo-1-alkenes

Martinez, A. Garcia,Alvarez, R. Martinez,Gonzalez, S. Martinez,Subramanian, L. R.,Conrad, M.

, p. 2043 - 2044 (2007/10/02)

(E)-1-iodo-1-alkenes 4 can be prepared stereoselectively from aldehydes 1 via IH-elimination of 1,1-di-iodoalkanes 3 with DBU. Key words: Vinyl iodide; diiodoalkane; elimination; stereoselectivity.

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