cyclization相关论文
Transition-metal-salt-mediated radical reactions of fullerenes have attracted extensive attention as a new and important......
A versatile and efficient telescoped reaction sequence for the synthesis of tetrahydroisoquinolines (THIQs) is reported ......
Copper-Catalyzed Aerobic Oxidative Ring Expansion of Isatins:A Facile Entry to Isoquinolino-Fused Qu
A copper-catalyzed aerobic oxidative ring expansion reaction of isatins with 1,2,3,4-tetrahydroisoquinoline for the synt......
An efficient procedure for the selective preparation of hydroxy-, carbonyl- and acetal-containing 2-pyrrolidinones has b......
喹啉－N－氧化物及衍生物有抑菌、抗病毒、抗肿瘤等作用,在医药、农药、染料和催化等领域都有广泛应用.本文综述了通过氧化、环合和扩......
First Total Synthesis of Hyacinthacine A6 from the Protected Derivative of Polyhydroxylated Pyrrolid
本文通过对荣华二采区10...
Synthesis of 6-(Bromomethyl)-4-methoxy-5,6,7,8-tetrahydropyrido-[3,2-d]pyrimidin-2-ol from 6-Methylp
本文通过对荣华二采区10...
Synthesis of novel chiral fluorinating agents, (+)- and (-)-N-fluoro-3-methyl-3-(4-methylphenyl)-2H-
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Cyclization and halogenation of substituted o-allylphenols with diacetoxyiodobenzene in the presence
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Rhodium-catalyzed selective [2 + 2 + 2] cyclizations of 1,6-diynes with monoynes leading to isoindol
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Synthesis of 2-Amino-1,3,4-oxadiazoles through Elemental Sulfur Promoted Cyclization of Hydrazides w
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
On the Synthesis of Stereocalpin A: Partial Retraction/ Correction of Previous Results and Rationali
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Iron-Catalyzed Oxidative Cyclization of 1,6-Enones with Aldehydes: Synthesis of Functionalized 3,4-D
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Rhodium(III)-catalyzed intermolecular cyclization of anilines with sulfoxonium ylides toward indoles
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Cycloaddition of hydrazones and 1, 2-diarylalkynes promoted by t-BuOK/DMF: A convenient synthesis of
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Mass Spectral Fragmentation of (S,S)-N,N′-Bis [1-(hydroxymethyl)alkyl]anthracene/Naphthalene-1,8-dic
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Synthesis of 6-(Bromomethyl)-4-methoxy-5,6,7,8-tetrahydropyrido-[3,2-d]pyrimidin-2-ol from 6-Methylp
6-(Bromomethyl)-4-methoxy-5,6,7,8-tetrahydropyrido[3,2-d]pyrimidin-2-ol(compound 9) was synthesized from 6-methylpyrimid......
Rhodium-catalyzed selective [2 + 2 + 2] cyclizations of 1,6-diynes with monoynes leading to isoindol
A highly efficient and selective [2 + 2 + 2] cyclization of diynes and monoalkynes was catalyzed by rhodium under room t......
Ferric chloride catalyzes the isomerization and cyclization of geraniol, linalool and nerol in acetonitrile giving α-te......
We have interested for some years in studying organic reactions catalyzed by (RCp)2TiCl2/i-C3H7MgX, specially isomerizat......
Aromatic polybenzoxazole (PBO) precursor, hydroxy-substituted polyenaminonitrile, was prepared by direct polycondensatio......
Mass Spectral Fragmentation of (S,S)-N,N′-Bis [1-(hydroxymethyl)alkyl]anthracene/Naphthalene-1,8-dic
The mass spectrometric fragmentation of(S,S)-N,N′-bis[1-(hydroxymethyl)alkyl]anthracene/naphthalene-1,8-dicarboxamides ......
The Mechanism on Cyclization, Debenzylation and Oxidation of 1-[1-(Benzyloxy)-3-methylnaphthalen-4-y
1-[1-(Benzyloxy)-3-methylnaphthalen-4-yloxy]propan-2-one (1a) took place a cyclization, debenzylation and oxidation to f......
A novel and efficient route of synthesizing 1, 2, 4-triazoline-5-ones is reported. The title compounds can be prepared i......
Cyclization and halogenation of substituted o-allylphenols with diacetoxyiodobenzene in the presence
Substituted 2-halomethy1-2,3-dihydrobenzofurans were synthesized in one pot and in mild yield from substituted o-allylph......
Synthesis of novel chiral fluorinating agents, (+)- and (-)-N-fluoro-3-methyl-3-(4-methylphenyl)-2H-
Treatment of N-t-butylbenzenesulfonamide with an excess of BuLi, followed by the reaction with methyl 2-(4-methylphenyl)......
The first synthesis of the naturally occurring cyclic peptide euryjanicin B has been achieved. A general method was desc......
A short synthesis of the tricyclic 6-6-6 and 6-7-6 ring systems of the abietane- and icetexane-type diterpenoids from a ......
C–N键广泛存在于药物、天然产物和功能材料中,而氮中心自由基在C–N键的构建中起到关键作用.但是,与广泛使用的碳中心自由基相比,......
预氧化阶段是链状聚丙烯腈(PAN)分子演变为耐热梯型结构的过程.文中借助IR,X-ray及纤维应力-形变关系初步探索了PAN纤维预氧化过程......
将通过自由基聚合得到的聚丙烯腈（PAN）在不同温度下进行预氧化反应，借助X射线衍射（XRD）分析，根据群子统计理论，研究了PAN在预氧化过程中从......
选用长为316bp的双链DNA片段研究其柔韧性和成环能力，并用两种核酸内切酶探测微环DNA结构的完整性．结果表明，在T。连接酶的催化作用下......
以单氰胺和二乙胺为起始原料,经加成反应以及乙酰乙酸乙酯参与下的环合反应制备了2-二乙胺基-6-甲基-4-羟基嘧啶,总产率为72.7%。......
1,1-二溴-3,3,3-三氟丙酮可以在温和的条件下，引入三氟甲基，与醛基形成咪唑类化合物，与氨基形成吡嗪、哌嗪、哒嗪酮类化合物，用于合成......
介绍了3-溴-1,1,1-三氟丙酮在医药和农药中间体合成中的应用,并对其应用进行了详细综述。...
以5-甲氧基-4-(1-甲基-4-甲氧基哌啶)-2-氨基苯甲酸甲酯(1)为原料,通过环合、氯化、胺化3步反应合成凡德他尼,总收率48.11%。其结......
以环戊酮为起始原料,与氰胺、戊酰化物反应得到N-(1-氰基环戊基)戊酰胺(2);2经双氧水水解得到1-戊酰胺基环戊烷-1-羟酰胺(3);化合......
α-环香叶酸是合成大马酮类香料的关键中间体,比较了现有的几种α-环香叶酸的合成方法,选择和确认了一条以柠檬醛为原料,经氧化关......
介绍了中国石化齐鲁股份有限公司氯碱厂对环氧氯丙烷装置环化反应系统进行改进的情况：二氯丙醇水溶液和石灰乳在特制的静态混合器中......
以丁烯酸和2-巯基噻吩为原料，经加成缩合制得3-（2-噻吩硫基）丁酸（2）；以氯化亚砜氯化，三氯化铝催化环合得5，6-二氢-4H-6-甲基噻嗯并[2，3-b]噻......
以3-(3-氯-苯基)-丙酰氯为原料,六氟异丙醇为溶剂,三氯化铝为催化剂,可以高收率环化得到茚虫威中间体5-氯-1-茚酮。该反应条件温和......
目的：研究取代苯并异噁唑的合成方法.方法：设计以丹皮酚为起始原料,经肟化、酯化和环化共3步反应制备目标化合物的合成路线.结果：合成......
用硫酸镍催化假性紫罗兰酮的环化反应,得到了较高产率的紫罗兰酮。探索了催化剂用量、反应温度、反应时间、溶剂用量和溶剂的种类......
利用商业可购买的3,4-二甲氧基苯甲醛为原料,与叠氮乙酸乙酯缩合得到叠氮基肉桂酸甲酯;再经过分子内环化获得5,6-二甲氧基吲哚甲酸......
采用溶液共聚合法合成丙烯腈（AN）与衣康酸（IA）的共聚物.借助傅里叶变换红外光谱和差示扫描量热分析研究了共聚单体IA含量对聚丙烯腈（PAN......
因为他们简历活动的宽范围， Quinazolinediones 是特别地吸引人的 pharmacophores。到三代用品的 quinazoline-2,4-dione 衍生物的......
2-（4-叔丁基苯氧甲基）-3-喹啉酸（1a—1d），在多聚磷酸（PPA）的作用下发生分子内的闭环反应和脱叔丁基反应，得到了不含有叔丁基的苯并杂卓并喹......
