Arylcyclopropane photochemistry. Unusual aromatic substituent effects on the photochemical rearrangement of (2-arylcyclopropyl)methyl acetates to 1-arylhomoallyl acetates
Copper‐Impregnated Magnesium‐Lanthanum Mixed Oxide: A Reusable Heterogeneous Catalyst for Allylation of Aldehydes and Ketones
作者:Jaya Pogula、Soumi Laha、B. Sreedhar、Pravin R. Likhar
DOI:10.1002/adsc.201901133
日期:2020.3.4
Copper‐impregnated magnesium‐lanthanum mixed oxide [Cu(II)/Mg−La] was used as catalyst in synthesis of homoallylic alcohols from aldehydes and ketones using allyltributylstannane as the allylating source. The present protocol provides a great application potential for the synthesis of corresponding allyl alcohols with excellent yields and selectivity. The catalyst exhibits broad functional group compatibility
The present invention provides BACE inhibitors of Formula I:
methods for their use, intermediates, and methods for their preparation.
本发明提供了式I的BACE抑制剂:使用它们的方法、中间体以及它们的制备方法。
Reshuffling of Functionalities Catalyzed by a Ruthenium Complex in Water
作者:Chao-Jun Li、Dong Wang、Dong-Li Chen
DOI:10.1021/ja00156a028
日期:1995.12
Repositioning the functionalities of olefinic alcohols is a common process encountered in synthesis. Such transformations often require multistep reactions, or strong acids. We report here that, in the presence of a catalytic amount of RuClsub2}(PPhsub3})sub3}, homoallylic alcohols and allyl alcohols undergo structural reorganization in which both the hydroxyl group and the olefin have been reshuffled
Palladium-catalyzed anti-Markovnikov oxidative acetalization of activated olefins with iron(<scp>iii</scp>) sulphate as the reoxidant
作者:Rodney A. Fernandes、Sandhya S. Yadav、Praveen Kumar
DOI:10.1039/d1ob02227j
日期:——
efficient palladium-catalyzed anti-Markovnikov oxidative acetalization of activated terminal olefins with iron(III) sulfate as the reoxidant. This methodology requires mild reaction conditions and shows high regioselectivity toward anti-Markovnikov products and compatibility with a wide range of functional groups. Iron(III) sulphate was the sole reoxidant used in this method. Various olefins like vinylarenes
本文公开了以硫酸铁( III )为再氧化剂的活性末端烯烃的高效钯催化抗马尔科夫尼科夫氧化缩醛化反应。该方法需要温和的反应条件,并显示出对抗马尔科夫尼科夫产物的高区域选择性以及与多种官能团的相容性。硫酸铁( III ) 是该方法中使用的唯一再氧化剂。各种烯烃,如乙烯基芳烃、芳基烯丙基醚、丙烯酸芳基或苄基丙烯酸酯和高烯丙醇都反应良好,提供抗马尔科夫尼科夫缩醛,其中一些代表正交官能化的 1,3-和 1,4-二氧化化合物。
Manganese-Mediated Carbon−Carbon Bond Formation in Aqueous Media: Chemoselective Allylation and Pinacol Coupling of Aryl Aldehydes
of manganese as a mediator for allylations and pinacol couplings in aqueousmedia was investigated. The combination of manganese and copper is found to be a highly effective mediator for the allylation of aryl aldehydes in water. Such a combination is found to be more reactive than other previously reported metals in aqueousmedia. No reaction was observed with either manganese or copper alone as the