<i>N</i>-Alkylation of imides using phase transfer catalysts under solvent-free conditions
作者:Jolanta Jaśkowska、Piotr Kowalski
DOI:10.1002/jhet.5570450519
日期:2008.9
N-Alkylation of imides in the reaction of imides and alkylhalides, catalyzed by PT catalystsundersolvent-freeconditions, has been developed. The reaction occurs in the presence of K2CO3, and in many cases it takes place spontaneously. In the N-benzylation reaction, it has been recognized that TBAB (tetrabutylammonium bromide) and TBATFB (tetrabutylammonium tetrafluoroborate) show highest catalytic
已经开发了在无溶剂条件下由PT催化剂催化的酰亚胺和烷基卤化物的反应中酰亚胺的N-烷基化。该反应在K 2 CO 3的存在下发生,并且在许多情况下是自然发生的。在N-苄基化反应中,已经认识到TBAB(溴化四丁基铵)和TBAFB(四氟硼酸四丁基铵)显示出最高的催化作用。通过各种酰亚胺的N-苄基化和N-乙基化,已证实了无溶剂烷基化的多功能性和合成能力。所开发的方法使得容易获得N-(ω-溴烷基)酰亚胺。
Hydroisoindolines and hydroisoquinolines as psychotropic
申请人:Du Pont Merck Pharmaceutical Company
公开号:US05216018A1
公开(公告)日:1993-06-01
There are provided nitrogen-containing bicyclic compounds which are useful in the treatment of physiological or drug induced psychosis or dyskinesia in a mammal. These novel compounds are selective sigma receptor antagonists and have a low potential for movement disorder side effects associated with typical antipsychotic agents.
Selective reduction of αβ-olefinic amides and lactams by magnesium and methanol
作者:Roger Brettle、Sa'ad M. Shibib
DOI:10.1039/p19810002912
日期:——
αβ-Olefinicamides with various substitution patterns at the carbon–carbon double bond and at nitrogen are all reduced to the corresponding saturated amides by magnesium and methanol. The same reducing system reduces N-benzyl-8-azabicyclo[4.3.0]nona-1(6),3-dien-7-ones at the conjugated double bond to give mixtures of the cis-and trans-dihydro-derivatives; the isolated, non-conjugated double bond is
在碳-碳双键和氮上具有各种取代方式的αβ-烯烃酰胺都被镁和甲醇还原为相应的饱和酰胺。相同的还原体系将共轭双键处的N-苄基-8-氮杂双环[4.3.0] nona-1(6),3-dien-7-还原为顺式和反式二氢衍生物的混合物。分离的非共轭双键即使在3,4-二苯基取代的化合物中也不会还原。镁和甲醇降低喹啉-2(1 H ^) -酮其3,4-二氢衍生物,和5,6,7,8-四氢喹啉-2(1 H ^) -酮于两个二氢衍生物的混合物。
Intramolecular reactions of 2-propynylsilanes with n-acyliminium ions
作者:Wim J. Klaver、Marinus J. Moolenaar、Henk Hiemstra、W.Nico Speckamp
DOI:10.1016/s0040-4020(01)86638-2
日期:1988.1
precursors lead to bridged azabicyclic systems 34–45 (Table I), containing the uncommon α-allenic amide functionality. After introduction of a tert-butoxycarbonyl or a tosyl group onto the lactam nitrogen atom, these molecules react with cuprates in an SN2' fashion. The products 52–58 (Table II) are angularly functionalized trans-fused carbobicycles containing a 1,3-diene moiety.
2-丙炔基硅烷与环状N-酰基亚胺离子前体的分子内酸辅助反应会导致桥连的氮杂双环体系34 – 45(表I),其中含有罕见的α-烯丙基酰胺官能团。在内酰胺氮原子上引入叔丁氧基羰基或甲苯磺酰基后,这些分子以S N 2'的方式与铜酸盐反应。产物52 – 58(表II)是含有1,3-二烯部分的有角度官能化的反式融合碳环。
Synthesis of novel fluorinated building blocks via halofluorination and related reactions
作者:Attila Márió Remete、Tamás T Novák、Melinda Nonn、Matti Haukka、Ferenc Fülöp、Loránd Kiss
DOI:10.3762/bjoc.16.208
日期:——
electrophilic activation through halonium ions of the ring olefin bonds, followed by nucleophilic fluorination with Deoxo-Fluor®. The fluorine-containing products thus obtained were subjected to elimination reactions, yielding various fluorine-containing small-molecular entities.