CAS: 930-28-9; Cyclopentyl Chloride

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CAS号96-41-3 环戊醇 | CAS号287-92-3 环戊烷 | CAS号120-92-3 环戊酮 | CAS号142-29-0 环戊烯 | CAS号50715-28-1 氯甲酸环戊酯 | CAS号75-71-8 二氯二氟甲烷 | CAS号109-63-7 三氟化硼乙醚 | CAS号7782-50-5 氯气 | CAS号78-00-2 四乙基铅 | CAS号3400-45-1 环戊甲酸 | CAS号32916-51-1 环戊基氯化镁 | CAS号3900-93-4 α-苯基环戊基乙酸 | CAS号19247-73-5 环戊磺酸 | CAS号110-94-1 戊二酸 | CAS号872-53-7 环戊甲醛 | CAS号96-41-3 环戊醇 | CAS号287-92-3 环戊烷 | CAS号5614-37-9 环戊基甲醚 | CAS号142-29-0 环戊烯

在 四氯化钛体系中,用 二氯甲烷 作为反应溶剂,化学反应 1.0H,反应生成 氯代环戊烷
参考文献:四氯化钛 (Iv) 催化的环醇立体保留氯化:正面攻击机制的证据
标题:四氯化钛 (Iv) 催化的环醇立体保留氯化:正面攻击机制的证据
摘要:使用经典的亚硫酰氯试剂开发了醇的温和氯化反应,但添加了催化氯化钛 (Iv).这些反应进行得很快,以极好的收率提供氯化产物,并优先保留构型.包括空间位阻系统在内的各种手性环状次级底物的立体选择性都很高.氯亚硫酸盐首先在原位反应生成并通过四氯化钛的作用转化为烷基氯化物,四氯化钛被认为螯合氯亚硫酸盐离去基团并从正面释放卤素亲核试剂.为了更好地理解这种新的反应途径,使用两种不同的计算方法在 Dft 理论水平上进行了从头研究.这一计算证据表明,虽然反应通过碳正离子中间体进行,但这种带电物质可能保留金字塔几何形状,作为通过超共轭(超共轭体)稳定的构象异构体而存在.然后,这些碳正离子在亲核捕获时基本上"冻结"为其原始构型.
DOI:10.1021/jo3023439

专利信息

专利号:WO-2024174285-A1
优先权日:2023-02-21
标题:Method for preparing halogenated compound from metal halide salt on basis of mobile phase
发明人：SU REN; Ye Jiani
权利人:UNIV SOOCHOW
摘要:Disclosed is a method for preparing a halogenated compound from a metal halide salt on the basis of a mobile phase. The method comprises: converting an aromatic hydrocarbon, alkane or nitrile compound into a halogenated compound by means of a cheap metal halide salt and a photocatalyst under illumination. The method uses a cheap and safe halide salt as a halogen source, does not introduce additional elemental halogen or an additional oxidant, can implement a reaction at normal temperature and normal pressure, is high in terms of selectivity and friendly to environment, and can be used for replacing an existing synthesis reaction system for halogenated compounds. A mobile phase device is used to replace a tank reactor, such that operation is easy and convenient, the price is low, the substrate adaptability is high, the continuous synthesis of halogenated compounds can be achieved, and the method is suitable for industrial large-scale production.

专利号:WO-0069864-A1
优先权日:1999-05-19
标 题 :An improved synthesis of tetrakis (dihydro carbylamino) phosphonium halides
发明人：FLETCHER MICHELLE O; DEVROU PHILIP R; BALHOFF JOHN F; ATKINSON BRIAN
权利人:ALBEMARLE CORP
摘要:An improved, commercially viable process for synthesizing tetrakis(dihydrocarbylamino)phosphonium halides in the absence of oxigen is described. When reacting a tris(dihydrocarbylamino)phosphinimine with a halohydrocarbon and an aqueous solution of a source of hydroxide ion to form a tetrakis(dihydrocarbylamino)phosphonium halide, a combination of increased pressure and liquid organic medium is used. The advantages gained by operating in this fashion include shorter reaction times and the need for only about stoichiometric or slightly more than stoichiometric amounts of halohydrocarbon and source of hydroxide ion.

专利号:WO-2016071243-A1
优先权日:2014-11-05
标 题:Process for preparing halogenated alkenone ethers and their use in the synthesis of anthranilamide pesticides
发明人：BENSON STEFAN; ZIERKE THOMAS; GOETZ ROLAND; WALK BERNHARD; DOMRES MONIKA
权利人:BASF SE
摘要:The present invention relates to a process for preparing a compound of formula (III) starting from the vinyl ether (IlIa) and the compound (IIIb) with a reagent (lllc) selected from the group of sulfonylhalides or sulfonylanhydrides, e.g. methanesulfonyl chloride or p-toluenesulfonyl chloride, in the presence of a base. The present invention relates also to processes comprising further preceding and/or subsequent reaction steps, leading to anthranilamide pesticides or to precursors for them.

专利号:US-4588843-A
优先权日:1984-04-26
标 题:Synthesis of (alkoxyalkyl) amines
发明人：MARLETT EVERETT M
权利人:ETHYL CORP
摘要:It has been discovered that when reaction is effected between an alkali metal omega-amino-alkoxide and an alkyl halide, nucleophilic attack of the alkoxide on the alkyl halide occurs so that an (alkoxyalkyl)amine is formed. The conventional Hofmann displacement reaction (elimination of CH 3 Br) does not occur to any significant extent. Nor does the common olefin elimination reaction occur to any significant extent when using alkali metal omega-aminoalkoxides having one or two C 2 or higher alkyl substituents on the nitrogen atom.

专利号:US-9896523-B2
优先权日:2015-06-26
标题 :Ziegler-Natta catalyst synthesis and process thereof
发明人：SINGH GURMEET; KUMAR NARESH; KAUR SUKHDEEP; BANTU BHASKER; KAPUR GURPREET SINGH; SHASHIKANT
权利人:INDIAN OIL CORP LTD
摘要:The present invention describes a process of preparing a catalyst for olefin polymerization comprising: (i) treating a magnesium metal with an organohalide along with an internal donor to obtain a reaction mixture having solid component (A); (ii) treating the reaction mixture having solid component (A) with an acyl halide to obtain a reaction mixture having solid component (B); and (iii) treating the reaction mixture having solid component (B) of step (ii) with a transition metal compound to obtain the catalyst. The present invention also relates to a process for preparation of a catalyst system from said catalyst and preparation of a polyolefins from the catalyst system.

专利号:US-4269773-A
优先权日:1976-04-27
标 题:Fused oxazolidine compounds
发明人：MITSURU YOSHIOKA; TERUJI TSUJI; YASUHIRO NISHITANI; WATARU NAGATA
权利人:SHIONOGI & CO
摘要:Compounds represented by the following formula prepared from 6-aminopenicillanic acid are key intermediates in a stereo-specific synthesis of 1-oxadethiacephalosporins, highly active antibiotics: +TR [wherein COA and COB each is carboxy or protected carboxy; COX is carboxy, protected carboxy, or a group of the formula -COCQ=N2 or -COCHQ-Z (in which Q is hydrogen, lower alkyl or aryl; and Z is hydrogen or a nucleophilic group); Hal is halogen; R is lower alkyl or aralkyl; and Y is hydrogen or acyl].