Supported Gold Nanoparticle-Catalyzed Hydration of Alkynes under Basic Conditions
摘要:
TiO2-supported nanosize gold particles catalyze the hydration of alkynes using morpholine as a basic cocatalyst. Unlike most homogeneous cationic gold catalysts, the TiO2-Au/morpholine system is weakly basic and is compatible with acid-sensitive functional groups (e.g., silyl ethers, ketals) or with a strongly coordinating group such as pyridine. Whats more, this gold catalyst can be recycled by simple filtration and works well in flow reactors.
Supported Gold Nanoparticle-Catalyzed Hydration of Alkynes under Basic Conditions
摘要:
TiO2-supported nanosize gold particles catalyze the hydration of alkynes using morpholine as a basic cocatalyst. Unlike most homogeneous cationic gold catalysts, the TiO2-Au/morpholine system is weakly basic and is compatible with acid-sensitive functional groups (e.g., silyl ethers, ketals) or with a strongly coordinating group such as pyridine. Whats more, this gold catalyst can be recycled by simple filtration and works well in flow reactors.
Cooperative catalysis involving copper(ii) complex bearing redox ligands allows generation of CF˙3 radicals through ligand-based SET while metallic oxidation state is preserved.
铜(II)配合物参与的合作催化可以通过氧化还原配体产生CF˙3自由基,同时保持金属的氧化态。
Hydroxylated 15-deoxy derivatives of 9-hydroxy-13-trans-prostenoic acid
申请人:American Cyanamid Company
公开号:US03950406A1
公开(公告)日:1976-04-13
This disclosure describes certain 15-deoxy prostanoic acid derivatives having a hydroxy group further along in the beta-chain, useful as bronchodilators, hypotensive agents, anti-ulcer agents, or as intermediates.
Novel hydroxy substituted 15-deoxy-5-cis-prostenoic acids and esters
申请人:American Cyanamid Company
公开号:US04179451A1
公开(公告)日:1979-12-18
This disclosure describes certain hydroxy substituted 15-deoxy-5-cis-prostenoic acids and esters useful as hypotensive agents, anti-ulcer agents, bronchodilators, anti-microbial agents, anticonvulsants, or as intermediates.
The new blueberry plant variety ‘RIDLEY 4609’ is provided. The variety is produced from a cross of ‘C95-152’ (unpatented) and pollen parent ‘C00-09’ (U.S. Plant Pat. No. 22,778), which can be distinguished by its outstanding features.
This disclosure describes certain 15-deoxy prostanoic acid derivatives having a hydroxy group further along in the beta-chain, useful as bronchodilators, hypotensive agents, anti-ulcer agents, or as intermediates.