CAS: 592-46-1; Bipropenyl

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📜1,4-己二烯置于[ph2B(Tbuim)2Fe=ndipp][k(18-C-6)(Thf)2]体系中,用 氘代四氢呋喃 作为反应溶剂,以50%的收率获得产物
参考文献:Fe═nr 键协同性催化烯烃中的 1,3-质子转移:C═c 双键的 Pka 控制区域选择性转位策略
标题:Fe═nr 键协同性催化烯烃中的 1,3-质子转移:C═c 双键的 Pka 控制区域选择性转位策略
摘要:过渡金属催化的烯烃双键转位通常涉及金属氢化物中间体.尽管在决定产品选择性的催化剂设计方面取得了重大进展,但对底物选择性的控制却不太先进,而且在含有多个 1-烯烃官能团的底物中选择性转位双键的过渡金属催化剂很少见.在此,我们报道了三坐标高自旋 (S = 2) Fe(II) 亚胺络合物 [ph 2 B(T Buim) 2 Fe═ndipp][k(18-C-6)Thf 2] (1-K(18-C-6)) 催化 1,3-质子从 1-烯烃底物转移,得到 2-烯烃转座产物.由实验校准的 Dft 计算支持的涉及动力学,竞争和同位素标记研究的机理研究强烈支持一种不寻常的烯烃转座非氢化机制,这种机制是由铁中心和碱性亚氨基配体的协同作用实现的.正如烯丙基质子的 P K A所指示的,该催化剂能够在含有多个 1-烯烃的底物中实现 C=c 双键的区域选择性转座.配合物的高自旋 (S = 2) 状态允许广泛
DOI:10.1021/jacs.2C13350

专利信息

专利号:US-11059914-B2
优先权日:2016-12-21
标题:Method for the continuous synthesis of a diene elastomer with lithium amide initiator
发明人：DIRE CHARLOTTE; DESSENDIER MARIE-HÉLÈNE
权利人:MICHELIN & CIE
摘要:A process for the continuous synthesis of a diene elastomer is provided. The synthesis is conducted by means of n reactors r1 to rn, considered to be continuous stirred-tank reactors, which are equipped with an internal stirring system. The reactors are arranged in series, n varying from 2 to 15, preferably from 2 to 9. The reactor r1 is fed by an input solution comprising a solvent, one or more monomer(s), an anionic polymerization initiator chosen from lithium amides and a polar agent. The conversion by weight C1 in the first reactor is less than 70%, and the total conversion by weight Cn at the outlet of the reactor rn is greater than or equal to 70%.

专利号:US-10428206-B2
优先权日:2015-07-02
标 题 :Process for the continuous synthesis of a modified diene elastomer
发明人：DORATO MARGARITA; FLESINSKI LIONEL
权利人:MICHELIN & CIE
摘要:A process for the continuous synthesis of a modified diene elastomer includes:n polymerization by n reactors r1 to rn equipped with an internal stirring system, the reactor r1 being fed by an input solution comprising a solvent, one or more monomers, an anionic polymerization initiator and a polar agent, one or more of the reactors being fed by reinjection of a purified solution comprising solvent and/or monomer(s), the number of dead chains in the output stream from the reactor rn is less than 30% of the number of living chains initiated in the reactor r1, the temperature of each reactor varying from 20° C. to 150° C.; and modification of the living diene elastomer obtained in the preceding stage and exhibiting a polydispersity index varying from 1.1 to 2, making it possible to introduce, into the elastomer, a functional group comprising at least one silicon atom directly connected to the elastomer chain.

专利号:US-6262251-B1
优先权日:1995-10-19
标题 :Method for solution phase synthesis of oligonucleotides
发明人：PIEKEN WOLFGANG; MCGEE DANNY; SETTLE ALECIA; ZHAI YANSHENG; HUANG JIANPING
权利人:PROLIGO LLC
摘要:This invention discloses an improved method for the sequential solution phase synthesis of oligonucleotides. The method lends itself to automation and is ideally suited for large scale manufacture of oligonucleotides with high efficiency.

专利号:US-9809661-B2
优先权日:2012-07-02
标 题 :Process for continuous synthesis of a diene elastomer
发明人：DUSSILLOLS JEROME; KIENER PIERRE; PAROLA HELENE
权利人:MICHELIN & CIE; MICHELIN RECH TECH; MICHELIN RECH TECH
摘要:A process for the continuous synthesis of diene elastomers with a high degree of conversion is provided. The process includes simultaneously:n a) introducing continuously into a polymerization reactor containing a gas phase and equipped with at least one stirring rotor and a discharge device, at least i. one or more monomers, including at least one conjugated diene monomer, and ii. from 0% to 70% by mass of an organic solvent, calculated relative to the total mass of monomers and of solvent b) continuously polymerizing the monomer(s), c) stirring the polymerization medium via the continuous movement of at least one stirring rotor about a rotary axle, d) continuously discharging the elastomer paste, e) continuously conveying the discharged elastomer paste to a chopping device and chopping it into particles, f) removing solvent from the particles of the elastomer paste, and g) recovering diene elastomer.

专利号:US-4443310-A
优先权日:1981-03-12
标题:Photoinitiated synthesis of mercaptans
发明人：ARRETZ EMMANUEL; LANDOUSSY CLAUDE; MIRASSOU ALFRED; OLLIVIER JEAN
权利人:ELF AQUITAINE
摘要:Improvement in the photoinitiated synthesis of mercaptans, in which an ethylenic compound is treated with hydrogen sulphide, preferably under pressure, in the presence of ultraviolet radiation and a photoinitiator involves the use of a xanthenic compound, possibly substituted, as the initiator. Preferably, the xanthenic compounds is employed in conjunction with an organic compound of an element of Group V A of the Periodic Classification of the Elements.

专利号:WO-9847910-A1
优先权日:1997-04-21
标题:Method for solution phase synthesis of oligonucleotides
发明人：PIEKEN WOLFGANG; MCGEE DANNY; SETTLE ALECIA; ZHAI YANSHENG; HUANG JIANPING; HILL KEN; SMITH RANDALL S
权利人:NEXSTAR PHARMACEUTICALS INC; PIEKEN WOLFGANG; MCGEE DANNY; SETTLE ALECIA; ZHAI YANSHENG; HUANG JIANPING; HILL KEN; SMITH RANDALL S
摘要:This invention discloses an improved method for the sequential solution phase synthesis of oligonucleotides. The method lends itself to automation and is ideally suited for large scale manufacture oligonucleotides with high efficiency.