ChemInform Abstract: MALEIC ACID AND FUMARIC ACID ESTERS AS LIGANDS IN METAL CARBONYL COMPLEXES. I. ULTINUCLEAR MOLYBDENUM TRICARBONYL COMPLEXES WITH Π-COORDINATED MALE C ACID AND FUMARIC ACID ESTERSorgano‐molybdenum compoundsDie zweikernigen Molybdnkomplexe (I) (Ll-′Fumar- oder Maleinsureester) ...
化学式为(CHCOOH)2为两种异构体的酸(A)和(B)。其中一种酸称为马来酸(maleic acid),另一种酸称为富马酸(fumaric acid)。(1) 试画出(CHCOOH)2的两种异构体的结构式,指出它们属于何种类型的异构体。(2) 富马酸的pKa1 = 3.02,pKa2 = 4.38,而马来酸的pKa1 = 1.92,pKa2 = 6.23,试指出上述两种结构...
fumaric acid maleic acid cis-butenedioic acidNCIOpen2_003792NCIOpen2_004870NCI60_002239110-16-7110-17-8 [Structure][ Properties Computed from Structure] Molecular Weight 116.07216 [g/mol] Molecular Formula C4H4O4 XLogP -0.4 H-Bond Donor 2 H-Bond Acceptor 4 Rotatable Bond Count 2 Exact Mass ...
: a crystalline dicarboxylic acid C4H4O4 that is isomeric with fumaric acid and is used especially in organic synthesis Word History Etymology French acide maléique, alteration of acide malique malic acid; from its formation by dehydration of malic acid First Known Use 1838, in the meaning ...
Synthesis and rheological study of some maleic acid and fumaric acid stereoregular polyesters, 3. Synthesis of a series of configurationally pure aliphatic... A series of aliphatic polymaleates was prepared by polycondensation of potassium maleate with 伪,蠅-dibromoalkanes Br(CH2)n Br (n = 1.....
Polycarboxylate ether (PCE) superplasticizers with different molecular structure were synthesized by copoly-merizing macro-monomer with cis-butenedioic anhydride (MAH) and trans-1,2-ethenedicarboxylic acid (FA). Gel permeation chromatography, specific charge density, Fourier transform infrared spectroscopy,...
Related to maleic:Fumaric,maleic hydrazide (məˈleɪɪk) adj (Elements & Compounds) of or pertaining to maleic acid or anything derived from it Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 200...
The present invention relates to new maleic acid or fumaric acid derivatives and to a process for preparing the same. It has been found that functional derivatives of propiolic acid are capable of undergoing an addition reaction with hydrogen cyanide. This addition reaction is preferred to......
Since the early '40s, and through most of the '60s, fumaric acid was industrially obtained from the mould Rhizopus arrhizus; its fermentative production, however, has long been abandoned for economic reasons. At present time, in fact, this acid is commercially obtained by chemical synthesis via...
Attilio Citterio,Alberto Cominelli,Francesco Bonavoglia.Reductive arylation of maleic and fumaric acid derivatives by arenediazonium and titanium (Ⅲ) salts. Synthesis . 1983Attilio Citterio,Alberto Cominelli,Francesco Bonavoglia.Reductive arylation of maleic and fumaric acid derivatives by arenediazonium ...