Silica Chloride (SiO<sub>2</sub>-Cl), a New Heterogeneous Reagent, for the Selective and Efficient Conversion of Benzylic Alcohols to Their Corresponding Chlorides and Iodides
Abstract Structurally different benzylic alcohols were efficiently converted to their corresponding chlorides by silica chloride (SiO2-Cl) in CHCl3 at room temperature. Silica chloride is also able to convert benzylic alcohols to their iodides in the presence of NaI in a mixture of CH3CN/CHCl3 in excellent yields.
摘要 在室温下,在 CHCl3 中的氯化硅 (SiO2-Cl) 可以将结构不同的苄醇有效地转化为其相应的氯化物。在 NaI 存在下,在 CH3CN/CHCl3 混合物中,氯化硅也能够以极好的收率将苄醇转化为其碘化物。
HIV protease inhibitors useful for the treatment of aids
申请人:MERCK & CO. INC.
公开号:EP0534511A1
公开(公告)日:1993-03-31
Compounds of the form,
A-G-J
wherein A is an amine protecting group or urethane, G a dipeptide isostere and J a small terminal group are described. They are distinguished by tetrahydrofuryl or tetrahydropyranyl substituents, and the like. These compounds are useful in the inhibition of HIV protease, the prevention or treatment of infection by HIV and the treatment of AIDS, either as compounds, pharmaceutically acceptable salts, pharmaceutical composition ingredients, whether or not in combination with other antivirals, immunomodulators, antibiotics or vaccines. Methods of treating AIDS and methods of preventing or treating infection by HIV are also described.
Olefins are prevalent substrates and functionalities. The synthesis of olefins from readily available starting materials such as alcohols, amines and carboxylic acids is of great significance to address the sustainability concerns in organic synthesis. Metallaphotoredox-catalyzed defunctionalizations were reported to achieve such transformations under mild conditions. However, all these valuable strategies
[EN] MODULATORS OF INDOLEAMINE 2,3-DIOXYGENASE<br/>[FR] MODULATEURS D'INDOLAMINE 2,3-DIOXYGÉNASE
申请人:GLAXOSMITHKLINE INTELLECTUAL PROPERTY (NO 2) LTD
公开号:WO2017051354A1
公开(公告)日:2017-03-30
Provided are compounds and pharmaceutically acceptable salts thereof, their pharmaceutical compositions, their methods of preparation, and methods for their use in the prevention and/or treatment of HIV; including the prevention of the progression of AIDS and general immunosuppression.
MONOMER, POLYMER, RESIST COMPOSITION, AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20170131635A1
公开(公告)日:2017-05-11
A monomer of formula (1a) or (1b) is provided wherein A is a polymerizable group, R
1
-R
6
are monovalent hydrocarbon groups, X
1
is a divalent hydrocarbon group, Z
1
is an aliphatic group, Z
2
forms an alicyclic group, k=0 or 1, m=1 or 2, n=1 to 4. A useful polymer is obtained by polymerizing the monomer. A resist composition comprising the polymer has improved development properties and is processed to form a negative pattern having high contrast, high resolution and etch resistance which is insoluble in alkaline developer.