Synthesis, characterization and reactions of some short chain alkoxycarbonyl molybdenum compounds [M][Mo(CO)5(COOR)] (M=PPN, Et4N and R=Me, Et, iPr) and [Ph4As]2[Mo(CO)4{(COOCH(CH3)2)2}]: X-ray structure of [Et4N]2[Mo4O13]
作者:Samuel Jali、Holger B. Friedrich、Muhammad D. Bala
DOI:10.1016/j.ica.2011.10.039
日期:2012.3
spectroscopy, melting point and elemental analysis. When the CH 3 CN solution of the compounds [PPN][Mo(CO) 5 (COOCH(CH 3 ) 2 )] and [PPN][Mo(CO) 5 (OCH(CH 3 ) 2 )] were exposed to UV light the compounds decomposed to form the cluster compound [PPN] 2 [Mo 6 O 19 ]. The tetraethylammonium derivative, [Et 4 N][Mo(CO) 5 (COOCH 3 )], prepared from [Et 4 N][OCH 3 ] and Mo(CO) 6 in methanolic solution also decomposed
Formation of nitrophenyl ethers from polyols and nitroanisoles
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0335274A2
公开(公告)日:1989-10-04
Disclosed is a novel process for effecting an ether interchange reaction by heating together in the presence of a basic catalyst, a nitroaromatic ether or thioether and an organic compound containing at least one hydroxyl or mercapto group. The novelty resides particularly in carrying out the interchange in an inert solvent while sparging the heated reactants thereby to remove at least a portion of solvent along with an evolving alcohol or thiol.
The process is particularly adapted to the capping of organic polyols with nitroaromatic ether groups. The capped products are useful as intermediates for the preparation of high molecular weight polyamines which in turn find utility in various polymer applications.
Process for the production of aromatic polycarbonate
申请人:TEIJIN LIMITED
公开号:EP0667366A2
公开(公告)日:1995-08-16
A process for the production of an aromatic polycarbonate, which comprises polycondensing an aromatic dihydroxy compound and a diaryl carbonate in the presence, as a polycondensation catalyst, of at least one alkali metal salt selected from the group consisting of alkali metal salts of ate-complexes of a metal element, which is silicon, germanium, stannum or plumbum, and alkali metal salts of oxoacids of said metal elements. The above aromatic polycarbonate is almost free from being colored, is also almost free from a decrease in polymerization degree when molded, and is further almost free from forming branches and insolubles.
A method for producing ethers comprises the following steps:
initiating telomerization process of a conjugated diene compound with an hydroxyl compound represented by the following formula (I):
R1OH (I)
in the presence of a palladium compound, a tertiary isocyanide represented by the following formula (II):
R2NC (II)
, and a base; and
adding halfway through the telomerization process a tertiary phosphine represented by the following formula (III):
PR3R4R5 (III)
(the respective symbols are defined in the description).
一种生产醚的方法包括以下步骤:
启动共轭二烯化合物与下式 (I) 所代表的羟基化合物的端聚过程:
R1OH (I)
在钯化合物存在下,加入下式 (II) 所代表的叔异氰酸酯:
R2NC (II)
和一种碱;以及
在端粒化过程的中途加入下式(III)代表的叔膦:
PR3R4R5 (III)
(各符号在说明中定义)。
Mixture containing 1, 3-Butadiene and process for producing the same
申请人:Kuraray Co., Ltd.
公开号:EP1795578A2
公开(公告)日:2007-06-13
To provide a C4 fraction that contains significantly reduced amounts of butynes and methylallene and to provide a process for low-cost and effective production of ethers in which the C4 fraction is used as the starting material for a telomerization process.
A mixture containing 25 to 80 mass% 1,3-butadiene, 13 to 68 mass% butenes and 2 to 15 mass% butanes with butynes and methylallene being contained in amounts of 50 ppm or less and 5 to 800 ppm, respectively