scholarly journals Crystal structure of 2-[(2-oxo-thiazolidine-3-carbonyl)sulfamoyl]-methy-benzoic acid methyl ester, C13H14N2O6S2

2017 ◽  
Vol 232 (1) ◽  
pp. 67-68
Author(s):  
Qing-Wu Chen ◽  
De-Long Shen
Keyword(s):  
Crystal Structure ◽  
Methyl Ester ◽  
Benzoic Acid ◽  
Acid Methyl Ester ◽  
Acid Methyl

AbstractC13H14N2O6S2, monoclinic, C2/c (no. 15), a = 28.1174(10)Å, b = 9.8677(4)Å, c = 11.2738(4)Å, β = 98.4457(11)°, V = 3094.0(2)Å3, Z = 8, Rgt(F) = 0.0382, wRref(F2) = 0.1141, T = 296(2) K.

Derivate des Benzo[1.3]dioxols, 431 Über Benzo [1.3] dioxolcarbonsäuren / Derivatives of 1,3-Benzodioxoles, 43 1,3-Benzodioxolecarboxylic Acids

1978 ◽  
Vol 33 (7-8) ◽  
pp. 465-471
Author(s):  
Franz Daliacker ◽  
Volker Mues ◽  
In-O Kim
Keyword(s):  
Carboxylic Acid ◽  
Methyl Ester ◽  
Benzoic Acid ◽  
Myristic Acid ◽  
Good Yield ◽  
Acid Ester ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
Derivatives Of

Abstract We describe the possibilities of formation and preparation of the “natural” 1,3-benzodioxolecarboxylic acids 1, 2, 4, 6 b, and 7, already mentioned in literature. Myristic acid (3e) was prepared in good yield from 3-methoxy-4,5-dihydroxy-benzoic acid ester (3c) , which could be easily made from 3-methoxy-2,3-carbonyldioxy-benzoic acid methylester (3b). Myristicic acid methylester (3d) could be subjected to methylation and hydrolysis leading to 3e without any difficulties. 4.6-dimethoxy-1,3-benzodioxole-5-carboxylic acid (5b) was prepared in good yields by oxidation of 4,6-dimethoxy-1,3-benzodioxole-5-aldehyde (5a). 5.7-dimethoxy-1,3-benzodioxole-carboxylic acid (13f), one of the “unnatural” 1,3-benzodioxolecarboxylic acids, derivatives of o-ipiperonylic acid (8), was prepared from 5-amino-7-methoxy-1,3- benzodioxole-4carboxylic acid methyl ester (13b) by diazotisation, elimination of nitrogen, methylation, and hydrolysis. A comparison of our measured pkA-values showed the strongest acidity belonging to 5,6-dimethoxy-1,3-benzodioxole-4-carbocylic acid (11).

Preparation, Crystal Structure and Theoretical Calculation of 4-(4,6-Dimethylpyrimidin-2-yl)-3-thio-allophanic Acid Methyl Ester

2006 ◽  
Vol 24 (2) ◽  
pp. 219-223 ◽  
Author(s):  
Ying-Hui Ren ◽  
Ji-Rong Song ◽  
Jie Huang ◽  
Hai-Xia Ma ◽  
Hua-Li Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Methyl Ester ◽  
Theoretical Calculation ◽  
Acid Methyl Ester ◽  
Acid Methyl

scholarly journals Crystal structure of 4-(4-hydroxy-3-methoxy-phenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylic acid methyl ester, C21H25NO5

2017 ◽  
Vol 232 (3) ◽  
pp. 409-410
Author(s):  
Wen-Jing Hao ◽  
Xiao-Yan Xu ◽  
Dai-Zun Zhang ◽  
Rui Han
Keyword(s):  
Crystal Structure ◽  
Carboxylic Acid ◽  
Methyl Ester ◽  
Acid Methyl Ester ◽  
Acid Methyl

AbstractC21H25NO5, monoclinic, P21/n (no. 14) a = 10.4501(19) Å, b = 15.750(3) Å, c = 12.043(2) Å, β = 102.625(3)°, V = 1934.3(6) Å3, Z = 4, Rgt(F) = 0.0406, wRref(F2) = 0.1177, T = 296(2) K.

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