Highly Efficient Narasaka-Heck Cyclizations Mediated by P(3,5-(CF3)2C6H3)3: Facile Access to N-Heterobicyclic Scaffolds
作者:Adele Faulkner、John F. Bower
DOI:10.1002/anie.201107511
日期:2012.2.13
N‐heterobicyclic scaffolds: Highlyefficient palladium‐catalyzed cyclizations of oxime esters with cyclic alkenes were used as a general entry to perhydroindole and related scaffolds. The chemistry is reliant upon the use of P(3,5‐(CF3)2C6H3)3 for the key C(sp3)N bond‐forming process and this facilitates cyclizations with enhanced levels of efficiency across a range of sterically and electronically
N-杂环双环支架:肟酯与环烯烃的高效钯催化环化反应通常用作过氢吲哚和相关支架的入口。化学过程依赖于关键的C(sp 3)N键形成过程使用P(3,5-(CF 3)2 C 6 H 3)3的形成,这有利于环化反应,并提高了整个反应过程的效率。一系列在空间和电子方面不同的基材。
Palladium- or nickel-catalyzed sequential reaction of organic bromides, bicyclo[2.2.1]hept-2-ene or bicyclo[2.2.1]hepta-2,5-diene and alkynes
作者:Marta Catellani、Gian Paolo Chiusoli、Aristodemo Mari
DOI:10.1016/0022-328x(84)80586-0
日期:1984.10
The reactions of various types of organic bromides with a mixture of bicycloheptene or bicycloheptadiene and alkynes are reported. The products are bicyclic compounds, containing an organic chain and an alkynyl group in adjacent positions.
Synthèse régiospécifique d'amines tertiaires à groupe secondaire bi-insaturé
作者:D. Mesnard、L. Miginiac
DOI:10.1016/0022-328x(89)85018-1
日期:1989.9
We describe the regiospecific preparation of tertiary amines with a symmetrical (or dissymmetrical) doubly unsaturated secondary group, by reaction of an allylic, vinylic or acetylenic organometallic derivative with a dialkylformamido acetal, a chlorinated iminium salt or an alkynyl aminoether.
Etude de l'alkylation d'organolithiens allyliques monochlores: Synthese en une etape de chlorures allyliques secondaires ou tertiaires et/ou de chlorures vinyliques de configuration Z
作者:B. Mauze、P. Ongoka、L. Miginiac
DOI:10.1016/0022-328x(84)85127-x
日期:1984.3
Le chloroallyllithium et le gem-chloro(méthyl) allyllithium réagissent facilement avec une large variété d'agents alkylants, pour conduire, en une seule étape, à des chlorures allyliques secondaires ou tertiaires et/ou à des chlorures vinyliques de configuration Z.
乐chloroallyllithium等乐宝石氯(甲基)烯丙基锂réagissentfacilement AVEC UNE大综艺D'代理alkylants,倒conduire,EN UNE seule ETAPE,一个DES chlorures allyliques次级线圈,欧tertiaires等/ OU一个DES chlorures vinyliques去配置ž。
Komplexkatalyse
作者:Rudolf Taube、Jörg-Peter Gehrke、Reiner Radeglia
DOI:10.1016/0022-328x(85)80206-0
日期:1985.8
η3-allylbis(triarylphosphite)nickel(II) complexes with butadiene under chain propagation to give the polybutadienyl complex, [3-RC3H4Ni(P(OAr)3)2]PF6, was monitored by 31P NMR spectroscopy. In the case of the triphenylphosphite complex both the anti- and the syn-configuration could be identified by means of their different AB spectra. The anti-syn isomerization, the higher reactivity of the thermodynamically
的η的反应3 -allylbis与丁二烯(三芳基亚磷酸酯)合镍(II)配合下链增长,得到聚丁二烯复杂,[3-RC 3 ħ 4的Ni(P(OAR)3)2 ] PF 6,被监测的31 P NMR光谱。在的亚磷酸三苯酯复合两种情况下的反-和SYN构型可以通过各自不同的AB光谱来确定。所述抗顺式异构化,在热力学上更稳定的更高的反应性顺式-形式,并且形成抗还证明了每个丁二烯插入步骤的结构。从这些观察结果中,可以首次得出反式调节的实验基础,以反syn异构化为速率确定步骤。