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4-Pentenoic acid, 2-(1,3-dithiolan-2-ylidene)-5-(4-methoxyphenyl)-3-oxo- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

133286-20-1

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133286-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133286-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,2,8 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 133286-20:
(8*1)+(7*3)+(6*3)+(5*2)+(4*8)+(3*6)+(2*2)+(1*0)=111
111 % 10 = 1
So 133286-20-1 is a valid CAS Registry Number.

133286-20-1Relevant academic research and scientific papers

Tandem Thien- and Benzannulations of -Alkenoyl-alkynyl Ketene Dithioacetals with Cyanoacetates: Synthesis of Functionalized Benzo[ b ]thiophenes

Ming, Wenbo,Liu, Xiaocui,Wang, Lianjie,Liu, Jun,Wang, Mang

supporting information, p. 1746 - 1749 (2015/04/14)

A novel domino annulation strategy for the construction of benzo[b]thiophenes has been developed. In the presence of Cs2CO3 and Ag2CO3, a wide range of -alkenoyl-alkynyl ketene dithioacetals readily react with c

A divergent synthesis of functionalized unsaturated δ-lactones from α-alkenoyl-α-carboxyl ketene dithioacetals

Liu, Jun,Wang, Mang,Li, Bing,Liu, Qun,Zhao, Yulong

, p. 4401 - 4405 (2008/02/05)

(Chemical Equation Presented) A divergent synthesis of functionalized unsaturated δ-lactones 2, 3, 4, and 5 has been developed starting from the readily available α-alkenoyl-α-carboxyl ketene dithioacetals 1 in high to excellent yields under mild reaction

Iododecarboxylation of α-carboxylate, α-cinnamoyl ketene cyclic dithioacetals

Wang, Mang,Xu, Xian-Xiu,Liu, Qun,Xiong, Li,Yang, Bin,Gao, Lian-Xun

, p. 3437 - 3443 (2007/10/03)

The iododecarboxylation reaction of α-carboxylate, α-cinnamoyl ketene cyclic dithioacetals 2 was successfully performed with iodine as halogenation reagent and in water insensitive media. This reaction provides a mild and efficient method for the preparat

A novel route to alkenoyl- and cinnamoylketene dithioacetals

Choi,Youn,Pak

, p. 15 - 18 (2007/10/02)

2-Acetyl(ethoxycarbonyl)methylene-1,3-dithietane and -dithiane (1) were condensed with various aldehydes or ketones to afford high yields of the corresponding substituted 2-(1-carboxy-2-oxo-3-butenylidene)-1,3-dithietanes and -dithianes 4, which upon heating decarboxylated smoothly to give the title compounds in high yield.

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