Cleavage of different ether bonds in butyl glycidyl ether and allyl glycidyl ether by K−, K+(15-crown-5)2
作者:Zbigniew Grobelny、Andrzej Stolarzewicz、Adalbert Maercker、Stanisław Krompiec、Tadeusz Bieg
DOI:10.1016/s0022-328x(02)01801-6
日期:2002.10
alkyl glycidylethers affects the course of their reaction with K−, K+(15-crown-5)2. The cyclic oxirane ring is exclusively cleaved in the case of butyl glycidylether whereas the presence of the unsaturated allyl group in the glycidylether molecule unexpectedly prefers the scission of the linear ether bond. In both the systems organometallic intermediates are formed. They react with crown ether causing
group: −O–(CH2CH2O)n–CH3 (n = 0, 1, 2, 3, 4, 6). These moieties are expected to exhibit, to a degree, the favorable properties of longer polyethyleneglycol (PEG) chains, while their relatively small size makes for a more favorable drug loading capacity. After administration of formal-based prodrugs to rats by oral gavage, significant concentrations of derivatives were measured in blood samples over
Self-decomposition of K−, K+(15-crown-5)2 tetrahydrofuran solution results in dipotassium tetraethylene glycoxide and ethylene as the main reaction products. Dipotassium triethylene glycoxide, potassium tetraethylene glycoxide vinyl ether, potassium butoxide and potassium ethoxide are found as secondary products of the reaction. Organometallic intermediate compounds formed in the studied process are
This disclosure provides low viscosity, low volatility alkylated siloxane compounds and alkylated alkoxy silane compounds. This disclosure also provides processes for producing the alkylated siloxane compounds and alkylated alkoxy silane compounds, and lubricating oil basestocks and lubricating oils containing one or more of the alkylated siloxane compounds or one or more of the alkylated alkoxy silane compounds. This disclosure further provides a method for improving one or more of solubility and dispersancy of polar additives and/or sludge in a lubricating oil by using as the lubricating oil a formulated oil containing one or more of the alkylated siloxane compounds or one or more of the alkylated alkoxy silane compounds.
METHOD FOR PRODUCING HOMOPOLYMER OR RANDOM COPOLYMER OF HYDROXYL GROUP-CONTAINING VINYL ETHER
申请人:MARUZEN PETROCHEMICAL CO., LTD.
公开号:US20150005467A1
公开(公告)日:2015-01-01
[Object] To provide a method of producing a homopolymer or random copolymer of hydroxyl group-containing vinyl ether simply and conveniently as well as efficiently.
[Means for solving problem] A method of producing a homopolymer or random copolymer of hydroxyl group-containing vinyl ether according to the present invention comprises the step of polymerizing a monomer component comprising at least one hydroxyl group-containing vinyl ether using an oil-soluble radical polymerization initiator in the absence or presence of a solvent.