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Bestmann-Ohira 试剂:从醛类协议合成炔烃
乙炔化学一直是并且仍然是分子科学的重要组成部分。它的潜力和广泛的应用从有机合成到材料科学再到生物有机化学。一些例子是烯二炔(DNA切割剂),“点击化学”工具和构建块。 因此,它引发了对高效合成炔烃的需求。
Cleaning Laboratory Glassware
Learn how to properly clean your laboratory glassware to improve your lab technique and insure high quality results. The most carefully executed piece of work may give an erroneous result if dirty glassware is used.
SnAP试剂_饱和N杂环结构单元-默克生命科学
SnAP试剂是一种种类不断扩充的试剂,现在可用来方便地合成中等环(6-9元)饱和N-杂环,包括双环和螺环结构。
TPGS-750-M:用于室温下水中有机金属化学反应的第二代两亲物
Lipshutz及其同事最近开发了第二代技术,用于基于聚氧乙戊基-α-生育酚琥珀酸酯衍生物TPGS-750-M的原始PTS表面活性剂。
羟醛缩合反应
羟醛缩合反应是由Charles Wurtz推出的有机反应,他于1872年首次从乙醛中制备了β-羟基醛。
Baeyer-Villiger氧化反应
Baeyer-Villiger氧化是与羰基相邻的碳-碳键的氧化裂解,其可将酮转化为酯、环酮转化为内酯。
放大指南:光催化反应
光催化反应放大指南,通过高通量筛选试剂盒最大限度提高放大成功率。
BINOL及其衍生物
我们展示了一篇有关BINOL及其衍生物的文章。
用于不对称合成的手性胺
手性胺已广泛用于不对称合成,例如用作对映选择性去质子化反应中的手性碱,或用于拆分消旋的酸。
手性磷酸:用途广泛的多功能有机催化剂
TRIP和TiPSY手性磷酸催化剂
氟烷基化:Togni试剂的扩展
目前的氟烷基化工具包括Togni试剂、高价碘全氟烷基化试剂、氟烷基溴化物、硅烷类和羧酸盐类以及用于后期氟烷基化的磺酰氟类。
均苯并四咪唑(HBTM):一种用于不对称酰基化的通用有机催化剂
作为我们不对称催化产品组合的一部分,我们很自豪地以(R)和(S)对映体形式提供异硫脲有机催化剂均苯并四咪唑(HBTM)。
过氧化物形成溶剂
对在正常储存条件下可发生自动氧化形成不稳定且有潜在危险的过氧化物副产物的实验室溶剂进行说明。
PYBOX配体 - 大结合位点和刚性支架
PYBOX配体由吡啶环侧接两个恶唑啉基团组成,由Nishiyama在1989年合成成功。
溶剂稳定剂系统
描述溶剂的稳定剂系统,包括酯、乙酯、四氢呋喃、氯化溶剂、氯仿和二氯甲烷。
TEMPO催化氧化
TEMPO(2,2,6,6-四甲基哌啶氧基或2,2,6,6-四甲基哌啶1-氧基)及其衍生物在有机氧化反应催化剂中可以作为稳定的硝酰基使用。TEMPO由Lebedev和Kazarnovskii于1960年发现,其具有的稳定自由基性质得益于其庞大的取代基团阻碍了自由基与其他分子之间发生反应。
四(二甲基氨基)乙烯(TDAE)
在2001年,佛罗里达大学的William Dolbier,Jr.教授报告了一种亲核三氟甲基化的方法,该方法基于在强力双电子还原剂四(二甲基氨基)乙烯(TDAE)存在下使用CF3I生成三氟甲基阴离子。
Glycosyltransferases: Tools for Synthesis and Modification of Glycans
Explore tools for glycosyltransferase synthesis and modification of glycans, such as glycosyltransferases and nucleotide sugar donors.
化学反应设计_化学反应优化_催化剂-默克生命科学
化学反应的设计和优化是有机合成研究的重要手段,通过改变反应参数,例如催化剂、反应体系pH值、反应溶剂、温度或时间等来节约成本、提高反应的选择性、产物的收率和纯度等
Trialkylphosphine for MBH Reactions
Amines and phosphines in nucleophilic catalysis are discussed, addressing the air sensitivity of phosphines.
N-Heterocyclic Carbene Ligands
A wide range of NHC ligands are commonly available which exhibit high activities.
CBS Catalysts
we are pleased to offer both enatiomers of 2-methyl-CBS-oxazaborolidine as a dry reagent, in addition to our current offerings as a 1M solution in toluene.
KitAlysis™ High-Throughput Screening Platform
KitAlysis High-Throughput Screening Kits provide solution to efficiently identify or optimize suitable catalytic reaction conditions. Chemist can rapidly run 24 unique micro scale reactions in parallel with tailored conditions.
Scale-Up Guide: Suzuki-Miyaura Cross-Coupling Reaction
All of the preformed catalysts used in the kit are air and moisture stable complexes in their commercially available form.
TPGS-750-M: Second-Generation Amphiphile for Organometallic Chemistry in Water at Room Temperature
Lipshutz and co-workers have recently developed a second generation technology to their original PTS-enabling surfactant based on the polyoxyethanyl-α-tocopheryl succinate derivative, TPGS-750-M.
Fluoroalkylation: Expansion of Togni Reagents
Fluoroalkylation toolbox expands with various reagents for late-stage fluoroalkylation in organic synthesis and medicinal chemistry.
Aldol Condensation Reaction
The aldol condensation reaction is an organic reaction introduced by Charles Wurtz, who first prepared the β-hydroxy aldehyde from acetaldehdye in 1872.
Baeyer-Villiger Oxidation Reaction
The Baeyer-Villiger oxidation is the oxidative cleavage of a carbon-carbon bond adjacent to a carbonyl, which converts the ketones to esters and the cyclic ketones to lactones.
Spirocyclic Building Blocks for Scaffold Assembly
Spirocyclic modules containing four-membered rings are currently of growing interest to discovery chemists.
Inverse Electron Demand Diels-Alder Reactions
Inverse electron demand Diels-Alder reactions enable total synthesis of natural products with heteroaromatic ring systems.
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