CAS: 74-86-2; Acetylene

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2-Hydroxyvinyl Radical 以 Gaseous Matrix 作为反应溶剂,353.9 °C,115.19 Kpa 条件下,反应生成 乙炔
参考文献:The Enthalpy Change And The Detailed Rate Coefficients Of The Equilibrium Reaction Oh+c2H2=mhoc2H2 Over The Temperature Range 627-713 K
标题:The Enthalpy Change And The Detailed Rate Coefficients Of The Equilibrium Reaction Oh+c2H2=mhoc2H2 Over The Temperature Range 627-713 K
摘要:The Reaction Between Oh And C2H2 In He Has Been Studied Over The Pressure Range 414-864 Torr And The Temperature Range 627-713 K By Means Of The Laser-Photolysis/laser-Induced-Fluorescence Technique. Analysis Of The Temporal Profile Of [oh] Yielded The Forward And The Reverse Rate Coefficients,Hence The Equilibrium Constant For The Reaction Oh+c2H2+m=hoc2H2+m. The Temperature Dependence Of The Equilibrium Constant Yielded The Enthalpy Of Reaction δh(670+/-43 K)=−(34.2+/-1.0) Kcal Mol−1 And The Entropy Of Reaction δs(670+/-43 K)=−(30.5+/-1.2) Cal K−1 Mol−1 Near 670 K; Consequently,δh0 (298 K)=−(33.6+/-1.2) Kcal Mol−1 And δs0 (298 K)=−(28.9+/-1.5) Cal K−1 Mol−1 Were Derived For The Reaction,In Agreement With Theoretical Prediction. The Temperature Dependence Of The Rate Coefficients For The Forward,The Reverse,And The Adduct-Loss (Isomerization/decomposition Other Than The Reverse) Reactions Near 1 Atm Have Been Determined To Be Kf = (1.1 +/-0.2) x 10−13 Exp[(1460 +/-500)/t] Cm3 Molecule−1 S−1,Kr = (2.2 +/-0.4) x 1012 Exp[− (15 100 +/-600)/t] S−1,And Ka= (7.4+0.2−5.6) x 1010 Exp[− (13 200+700−1700)/t] S−1,Respectively.
DOI:10.1063/1.462996

专利信息

专利号:US-2020148541-A1
优先权日:2017-06-01
标题 :An approach to a bottom-up synthesis of nanocarbons
发明人：GIDRON ORI; PHATANGARE SUNITA; DISHI OR; BEDI ANJAN
权利人:YISSUM RES DEV CO OF HEBREW UNIV JERUSALEM LTD
摘要:Provided is a method for the synthesis of a Ï€-conjugated system from oligofurans, under conditions involving cycloaddition.

专利号:US-7192567-B1
优先权日:1999-09-17
标题 :Precursor soot synthesis of fullerenes and nanotubes without formation of carbonaceous soot
发明人：REILLY PETER T A
权利人:UT BATTELLE LLC
摘要:The present invention is a method for the synthesis of fullerenes and/or nanotubes from precursor soot without the formation of carbonaceous soot. The method comprises the pyrolysis of a hydrocarbon fuel source by heating the fuel source at a sufficient temperature to transform the fuel source to a condensed hydrocarbon. The condensed hydrocarbon is a reaction medium comprising precursor soot wherein hydrogen exchange occurs within the reaction medium to form reactive radicals which cause continuous rearrangement of the carbon skeletal structure of the condensed hydrocarbon. Then, inducing dehydrogenation of the precursor soot to form fullerenes and/or nanotubes free from the formation of carbonaceous soot by continued heating at the sufficient temperature and by regulating the carbon to hydrogen ratio within the reaction medium. The dehydrogenation process produces hydrogen gas as a by-product. The method of the present invention in another embodiment is also a continuous synthesis process having a continuous supply of the fuel source. The method of the present invention can also be a continuous cyclic synthesis process wherein the reaction medium is fed back into the system as a fuel source after extraction of the fullerenes and/or nanotube products. The method of the present invention is also a method for producing precursor soot in bulk quantity, then forming fullerenes and/or nanotubes from the precursor bulk.

专利号:US-7247752-B2
优先权日:2004-10-01
标 题 :Methods for the synthesis of astaxanthin
发明人：LOCKWOOD SAMUEL F; TANG PENG CHO; NADOLSKI GEOFF; JACKSON HENRY L; FANG ZHIQIANG; DU YISHU; YANG MIN; GEISS WILLIAM; WILLIAMS RICHARD; BURDICK DAVID
权利人:CARDAX PHARMACEUTICALS INC
摘要:A method used for synthesizing intermediates for use in the synthesis of carotenoids and carotenoid analogs, and/or carotenoid derivatives. In some embodiments, the invention includes methods for synthesizing optically active intermediates useful for the synthesis of optically active carotenoids. Synthesis of optically active carotenoids, in one embodiment, may be accomplished by forming an optically active dihydroxy intermediate from ketoisopherone. The optically active dihydroxy intermediate may be converted into optically active astaxanthin derivatives.

专利号:US-8153839-B2
优先权日:2005-09-14
标题:Method for synthesis of keto acids or amino acids by hydration of acetylene compound
发明人：OGO SEIJI; FUKUZUMI SHUN-ICHI
权利人:OGO SEIJI; FUKUZUMI SHUN-ICHI; JAPAN SCIENCE & TECH AGENCY
摘要:An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1), n nwhere M 1 represents an element in Group VIII, IX, or X of the periodic table, and X 1 , X 2 , or X 3 ligand represents halogen, H 2 O, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k×m=L×n.

专利号:US-11891351-B2
优先权日:2020-03-20
标 题 :Synthesis of capsaicin derivatives
发明人：LAGER ERIK
权利人:AXICHEM AS
摘要:The present invention relates to the synthesis of capsaicin derivatives, specifically to the synthesis of 6-heptyne derivatives of capsaicin.

专利号:US-2010226847-A1
优先权日:2009-03-05
标题:Method for direct, chirality-selective synthesis of semiconducting or metallic single-walled carbon nanotubes
发明人：VASENKOV ALEKSEY V
权利人:CFD RES CORP
摘要:The present invention is a method comprising a direct chirality-selective nucleation and synthesis of single-walled carbon nanotubes from carbon-containing gases using catalytic nanoparticles of uniform size heated by ultra-short laser pulses of selected frequency to temperatures sufficient for carbon nanotube nucleation and synthesis.