CAS: 631-64-1; Dibromoacetic Acid

上下游产品

ethanol 1,1,2-tribromoethylene dibromomalonic acid acetic acidethyl dibromoacetate acetic acid-(4-bromomethanesulfonyl-anilide) dibromoacetyl chloride bromoacetic acid

📜二溴化乙炔置于氧气体系中,化学反应 20.0H,以7.4 G的收率获得产物二溴乙酸
参考文献:Liquid-Phase Oxidation Of Bromovinyl Compounds With Molecular Oxygen
标题:Liquid-Phase Oxidation Of Bromovinyl Compounds With Molecular Oxygen
摘要:Liquid-Phase Oxidation Of Bromovinyl Compounds With The Aim To Obtain The Corresponding (X-Bromo Acids Was Studied.
DOI:10.1134/s1070427206110218

专利信息

专利号:US-10807931-B2
优先权日:2017-08-16
标 题:Synthesis of phytocannabinoids including a decarboxylation step
发明人：REEKIE TRISTAN; SCOTT MICHAEL; KASSIOU MICHAEL
权利人:UNIV SYDNEY
摘要:Method for decarboxylating a carboxylated phytocannabinoid compound of Formula I to form a phytocannabinoid compound of Formula II: Formula I Formula II wherein: R1 is selected from the group consisting of: substituted or unsubstituted C 1 -C 5 alkyl; R2 is selected from the group consisting of: OH or O, and R3 is selected from the group consisting of: a substituted or unsubstituted cyclohexene, a substituted or unsubstituted C 2 -C 8 alkene, or a substituted or unsubstituted C 2 -C 8 dialkene; or R2 is O, and R2 and R3 together form a ring structure in which R2 is an internal ring atom; wherein the method includes heating a reaction mixture comprising the carboxylated phytocannabinoid compound and a polar aprotic solvent in the presence of a LiCl for a time sufficient to decarboxylate at least a portion of the carboxylated phytocannabinoid compounds and form the phytocannabinoid compound.

专利号:US-2021163438-A1
优先权日:2017-08-16
标题 :Synthesis of phytocannabinoids including a demethylation step
发明人：REEKIE TRISTAN; SCOTT MICHAEL; KASSIOU MICHAEL
权利人:UNIV SYDNEY
摘要:A method for demethylating a methylated phytocannabinoid compound of Formula I to form a phytocannabinoid compound of Formula II: Formula I Formula II wherein: R1 is selected from the group consisting of: substituted or unsubstituted C1-C5 alkyl; R2 is selected from the group consisting of: OH or O, and R3 is selected from the group consisting of: a substituted or unsubstituted cyclohexene, a substituted or unsubstituted C2-C8 alkene, or a substituted or unsubstituted C2-C8 dialkene; or R2 is O, and R2 and R3 together form a ring structure in which R2 is an internal ring atom; wherein the method includes: heating a reaction mixture comprising the methylated phytocannabinoid compounds and a polar aprotic solvent in the presence of a dissolved inorganic alkaline salt for a time sufficient to demethylate at least a portion of the methylated phytocannabinoid compounds and form the phytocannabinoid compound.

专利号:US-8507693-B2
优先权日:2010-03-03
标 题:Process for synthesis of fipronil
发明人：GHARDA KEKI HORMUSJI
权利人:GHARDA KEKI HORMUSJI
摘要:The present disclosure relates to a process for trifluoromethylsulfinyl pyrazole compound of formula I, n nfrom a compound of formula III, wherein, R, R 1 and R 2 represent a group containing halogen group respectively and R 3 represents a perhaloalkyl.

专利号:US-6160128-A
优先权日:1997-12-22
标题:Tritioacetylating reagents and processes for preparation thereof
发明人：SALJOUGHIAN MANOUCHEHR; MORIMOTO HIROMI; WILLIAMS PHILIP G; THAN CHIT
权利人:UNIV CALIFORNIA
摘要:Novel acetylating and tritioacetylating reagents suitable for preparation of nonlabelled and radiolabelled organic compounds. N-acetoxynaphthalimide, N-tritioacetoxyphthalimide, N-tritioacetoxysuccinimide, N-tritioacetoxynaphthalimide and processes of their preparation. The invention also concerns synthesis of nonlabelled acetylated and tritioacetylated organic compounds from precursors containing a free --NH 2 , --SH or --OH group.

专利号:US-7354985-B2
优先权日:1992-07-10
标 题:Fluorinated thermoset polyurethane elastomers prepared from polyether prepolymers formed from mono-substituted fluorinated oxetane monomers
发明人：MALIK ASLAM A; ARCHIBALD THOMAS G
权利人:MALIK ASLAM A; ARCHIBALD THOMAS G
摘要:This application is directed to novel fluorinated polymers and prepolymers derived from mono-substituted oxetane monomers having fluorinated alkoxymethylene side-chains and the method of making these compositions. The mono-substituted fluorinated oxetane monomers having fluorinated alkoxymethylene side-chains are prepared in high yield by the reaction of a fluorinated alkoxides with either 3-halomethyl-3-methyloxetane premonomers or aryl sulfonate derivative of 3-hydroxymethyl-3-methyloxetane premonomers. Preparation of a mono-substituted 3-bromomethyl-3-methyloxetane premonomer via a simple, high yield process amenable to commercial scaleup is also disclosed. The fluorinated oxetane monomers of this invention can be readily homo/co-polymerized in the presence of a Lewis acid and polyhydroxy compounds to obtain hydroxy-terminated polyether prepolymers having fluorinated alkoxymethylene side chains. Additionally, the fluorinated oxetane monomers can be copolymerized with non-fluorinated monomers such as tetrahydrofuran to give polyether prepolymers with improved hydrocarbon compatibility. These prepolymers are polydisperse and exhibit number average molecular weights from 5,000 to about 50,000. These prepolymers are amorphous oils with primary hydroxy end-groups and thus function efficiently as the soft block for the synthesis of a variety of thermoset/thermoplastic elastomers and plastics having the characteristics of very low surface energy, high hydrophobicity, low glasss transition temperature and low coefficient of friction. The polyurethanes derived from the prepolymers of this invention are elastomeric and, in addition to the above characteristics, exhibit high moisture resistance, high tear strength and excellent adhesion to a variety of substrates.

专利号:JP-2020530855-A
优先权日:2017-08-16
标题:Synthesis of phytocannabinoids involving demethylation steps