Synthesis of isocoumarins via thallation-olefination of benzoic acids
作者:R. C. Larock、S. Varaprath、H. H. Lau、C. A. Fellows
DOI:10.1021/ja00330a041
日期:1984.9
Par thallation de l'acide benzoique puis alcenylation en presence de PdCl 2 du carboxy-2 phenyl bis-trifluoroacetoxy thallium obtenu, on prepare diverses isocoumarines et dihydro-3,4 isocoumarines
在 PdCl 2 du carboxy-2 苯基双-三氟乙酰氧基铊 obtenu 存在下进行部分 thallation de l'acide benzoique puis alcenylation,制备不同的异香豆素和二氢-3,4 异香豆素
Palladium-Catalyzed Oxidative Activation of Arylcyclopropanes
作者:Zhi He、Andrei K. Yudin
DOI:10.1021/ol062476e
日期:2006.12.1
Palladium chloride-catalyzed intramolecular activation of electroneutral cyclopropanederivatives results in cleavage of the cyclopropane ring followed by formation of heterocyclic derivatives. Phenols, carboxylic acids, and amide groups were considered as substituents ortho to the cyclopropane ring in this catalytic activation chemistry. The regioselectivity observed in the case of amide-containing
Derivatives of 4-piperazin-1-yl-4-benzo[b]thiophene suitable for the treatment of cns disorders
申请人:Yamashita Hiroshi
公开号:US20090264404A1
公开(公告)日:2009-10-22
A heterocyclic compound or a salt thereof represented by the formula (1): where R
2
represents a hydrogen atom or a lower alkyl group; A represents a lower alkylene group or lower alkenylene group; and R
1
represents an aromatic group or a heterocyclic group. The compound of the present invention has a wide treatment spectrum for mental disorders including central nervous system disorders, no side effects and high safety.
DERIVATIVES OF 4-PIPERAZIN-1-YL-4-BENZO[B]THIOPHENE SUITABLE FOR THE TREATMENT OF CNS DISORDERS
申请人:YAMASHITA Hiroshi
公开号:US20120028920A1
公开(公告)日:2012-02-02
A heterocyclic compound or a salt thereof represented by the formula (1):
where R
2
represents a hydrogen atom or a lower alkyl group;
A represents a lower alkylene group or lower alkenylene group; and
R
1
represents an aromatic group or a heterocyclic group. The compound of the present invention has a wide treatment spectrum for mental disorders including central nervous system disorders, no side effects and high safety.
Effect of ether versus ester tethering on Heck cyclizations
作者:Steven R. Woodcock、Bruce P. Branchaud
DOI:10.1016/j.tetlet.2005.08.072
日期:2005.10
Ether tethers allow Heck cyclizations to proceed in high yields. Ester tethers lead to low yields. Styrene trapping experiments indicate that ester reactions form viable organopalladium intermediates that cannot cyclize efficiently. (c) 2005 Elsevier Ltd. All rights reserved.