CAS: 75-28-5; Isobutane

上下游产品

CAS号201230-82-2 carbon monoxide | CAS号106-98-9 正丁烯 | CAS号187737-37-7 propene | CAS号67-66-3 氯仿 | CAS号693-04-9 正丁基氯化镁 | CAS号106-97-8 丁烷 | CAS号56-23-5 四氯化碳 | CAS号1068-55-9 异丙基氯化镁 | CAS号54509-73-8 ethene | CAS号3282-30-2 特戊酰氯 | CAS号1118-32-7 Propanamide,N-(... | CAS号562-49-2 3,3-二甲基戊烷 | CAS号108-08-7 2,4-二甲基戊烷 | CAS号591-76-4 2-甲基已烷(异庚烷) | CAS号590-73-8 2,2-二甲基己烷 | CAS号592-27-8 2-甲基庚烷 | CAS号560-21-4 2,3,3-三甲基戊烷 | CAS号563-16-6 3,3-二甲基己烷 | CAS号565-75-3 2,3,4-三甲基戊烷 | CAS号609-26-7 2-甲基-3-乙基戊烷

2-甲基丁烷置于氟化锆体系中,化学反应生成 异丁烷
参考文献:Group 4 Metal Halides/alumina Solid Superacids Relation Between Electronegativity,Acid Strength And Catalytic Properties
标题:Group 4 Metal Halides/alumina Solid Superacids Relation Between Electronegativity,Acid Strength And Catalytic Properties
摘要:通过四族金属卤化物蒸气对铝土矿的作用获得的固体超酸的催化性质与所用卤化物的电负性相关.研究发现,路易斯超酸中心的酸性强度和低温五烷异构化的反应路径取决于与铝土矿载体结合的金属卤化物物种的电子接受能力.
DOI:10.1039/a707395J

专利信息

专利号:US-9446995-B2
优先权日:2012-05-21
标 题:Synthesis of therapeutic and diagnostic drugs centered on regioselective and stereoselective ring opening of aziridinium ions
发明人：CHONG HYUN-SOON
权利人:CHONG HYUN-SOON; ILLINOIS INST OF TECH
摘要:Stereoselective and regioselective synthesis of compounds via nucleophilic ring opening reactions of aziridinium ions for use in stereoselective and regioselective synthesis of therapeutic and diagnostic compounds.

专利号:US-10189803-B2
优先权日:2008-02-22
标题 :Synthesis of therapeutic and diagnostic drugs centered on regioselective and stereoselective ring opening of aziridinium ions
发明人：CHONG HYUN-SOON
权利人:CHONG HYUN SOON; ILLINOIS INSTITUTE OF TECH
摘要:Stereoselective and regioselective synthesis of compounds via nucleophilic ring opening reactions of aziridinium ions for use in stereoselective and regioselective synthesis of therapeutic and diagnostic compounds.

专利号:US-7589170-B1
优先权日:1998-09-25
标题 :Synthesis of cyclic peptides
发明人：SMYTHE MARK LESLIE; MEUTERMANS WIM DENIS FRANS; BOURNE GREGORY THOMAS; MCGEARY ROSS PETER
权利人:UNIV QUEENSLAND
摘要:This invention relates to methods for preparing cyclic peptides and peptidomimetic compounds in solution and bound to solid supports, and to cyclic peptide or peptidomimetic libraries for use in drug screening programs. In particular, the invention relates to a generic strategy for synthesis of cyclic peptides or peptidomimetics that enables the efficient synthesis under mild conditions of a wide variety of desired compounds. Two approaches were evaluated for their improvements in solution and solid phase synthesis of small cyclic peptides: positioning reversible N-amide substituents in the sequence; and applying native ligation chemistry in an intramolecular sense. Systematic investigation of the effects of preorganising peptides prior to cyclisation by using peptide cyclisation auxiliaries, and developing new linkers and peptide cyclisation auxiliaries to aid cyclic peptide synthesis gives surprising improvements in both yields and purity of products compared to the prior art methods. The combination of these technologies provides a powerful generic approach for the solution and solid phase synthesis of small cyclic peptides. The ring contraction and N-amide substitution technology of the invention provide improved methods for the synthesis of cyclic peptides and peptidomimetics. When used in conjunction with linker strategies, this combination provides solid-phase avenues to cyclic peptides and peptidomimetics.

专利号:US-11466050-B2
优先权日:2014-09-29
标 题 :Method for peptide synthesis and apparatus for carrying out a method for solid phase synthesis of peptides
发明人：KNAUER SASCHA; ROESE TOBIAS MICHAEL LOUIS; AVRUTINA OLGA; KOLMAR HARALD; UTH CHRISTINA
权利人:SULFOTOOLS GMBH
摘要:The invention relates to a method for peptide synthesis, wherein said method comprises the steps of reacting a first amino acid or a first peptide with an α-amine protected second amino acid in a solvent selected from the group consisting of water, alcohol, and a mixture of water and alcohol, and removing the α-amine protecting group with a deprotecting solution. The invention further relates to protective agents, their use and an apparatus for carrying out a method for solid phase synthesis of peptides.

专利号:US-2008287649-A1
优先权日:2006-12-29
标 题 :Methods for the synthesis of cyclic peptides
发明人：CHEN LIN; HAN YEUN-KWEI; ROBERTS CHRISTOPHER R
权利人:CHEN LIN; HAN YEUN-KWEI; ROBERTS CHRISTOPHER R
摘要:Methods for the synthesis of cyclic peptides are provided, as well as novel dipeptide compounds. The methods include the solid phase synthesis of a dipeptide, which is the coupled to a second peptide in a solid phase reaction. The peptide is then cyclized following the coupling reaction. The methods and dipeptides are particularly useful for the synthesis of MC-4 receptor agonist peptides.

专利号:US-5118853-A
优先权日:1988-10-13
标题:Processes for the synthesis of 3-disubstituted aminoacroleins
发明人：LEE GEORGE T; REPIC OLJAN
权利人:SANDOZ LTD
摘要:Process for the synthesis of compounds of the formula ##STR1## comprising the steps of (i) reacting a compound of the formula ##STR2## with oxalyl chloride or oxalyl bromide to form the corresponding compound of the formula ##STR3## (ii) reacting said compound of the formula ##STR4## with a compound of the formula ##STR5## to form the corresponding compound of the formula ##STR6## (iii) hydrolyzing said compound of the formula ##STR7## to obtain the corresponding compound of the formula ##STR8## the use of the compounds of the formula ##STR9## for the synthesis of the compounds of the formula ##STR10## and the use of the intermediates of Formula VII for the direct synthesis of the compounds of Formula II, n wherein n R 1 is C 1-3 alkyl, phenyl or phenyl substituted by 1 to 3 substituents each of which is independently C 1-3 alkyl, C 1-3 alkoxy, fluoro, chloro, bromo or nitro (maximum of two nitro groups), n R 1b is phenyl or phenyl substituted by 1 to 3 substituents each of which is independently C 1-3 alkyl, C 1-3 alkoxy, fluoro, chloro, bromo or nitro (maximum of two nitro groups), n R 2 is C 1-3 alkyl, n one of R 3 and R 4 is ##STR11## and the other is primary or secondary C 1-6 alkyl not containing an asymmetric carbon atom, C 3-6 cycloalkyl or phenyl-(CH 2 ) m -, n wherein n R 7 is hydrogen, C 1-3 alkyl, n-butyl, i-butyl, t-butyl, C 1-3 alkoxy, n-butoxy, i-butoxy, trifluoromethyl, fluoro, chloro, phenoxy or benzyloxy, n R 8 is hydrogen, C 1-3 alkyl, C 1-3 alkoxy, trifluoromethyl, fluoro, chloro, phenoxy or benzyloxy, n R 9 is hydrogen, C 1-2 alkyl, C 1-2 alkoxy, fluoro or chloro, and n m is 1, 2 or 3, with the provisos that not more than one of R 7 and R 8 is trifluoromethyl, not more than one of R 7 and R 8 is phenoxy, and not more than one of R 7 and R 8 is benzyloxy, n R 5 is hydrogen, C 1-3 alkyl, n-butyl, i-butyl, t-butyl, C 3-6 cycloalkyl, C 1-3 alkoxy, n-butoxy, i-butoxy, trifluoromethyl, fluoro, chloro, phenoxy or benzyloxy, and n R 6 is hydrogen, C 1-3 alkyl, C 1-3 alkoxy, trifluoromethyl, fluoro, chloro, phenoxy, or benzyloxy, with the provisos that not more than one of R 5 and R 6 is trifluoromethyl, not more than one of R 5 and R 6 is phenoxy, and not more than one of R 5 and R 6 is benzyloxy, n R 10 is C 1-6 alkyl, each X is chloro or bromo, and each X.sup.⊖ is chloride or bromide.