Efficient asymmetric syntheses of α-quaternary lactones and esters through chiral bifunctional sulfide-catalyzed desymmetrizing bromolactonization of α,α-diallyl carboxylic acids

2021 ◽  
Author(s):  
Mana Hiraki ◽  
Ken Okuno ◽  
Ryuichi Nishiyori ◽  
Noser A. Ahmed ◽  
Seiji Shirakawa
Keyword(s):  
Carboxylic Acids ◽  
Asymmetric Syntheses ◽  
Formidable Challenge ◽  
Chiral Lactones

Asymmetric halolactonizations are powerful methods for the syntheses of chiral lactones. Catalytic and highly enantioselective halolactonizations of α-allyl carboxylic acids, however, continue to present a formidable challenge. Herein, we report...

Electrophilic asymmetric syntheses of α-hydroxy carboxylic acids

1986 ◽  
Vol 27 (24) ◽  
pp. 2731-2734 ◽  
Author(s):  
Jerry W. Ludwig ◽  
Martin Newcomb ◽  
David E. Bergbreiter
Keyword(s):  
Carboxylic Acids ◽  
Asymmetric Syntheses ◽  
Hydroxy Carboxylic Acids

ChemInform Abstract: Electrophilic Asymmetric Syntheses of α-Hydroxy Carboxylic Acids.

1986 ◽  
Vol 17 (45) ◽  
Author(s):  
J. W. LUDWIG ◽  
M. NEWCOMB ◽  
D. E. BERGBREITER
Keyword(s):  
Carboxylic Acids ◽  
Asymmetric Syntheses ◽  
Hydroxy Carboxylic Acids

Suicide on the Indian Subcontinent

Crisis ◽  
2002 ◽  
Vol 23 (3) ◽  
pp. 104-107 ◽  
Author(s):  
Murad M. Khan
Keyword(s):  
Sri Lanka ◽  
Mental Health Professionals ◽  
Indian Subcontinent ◽  
Interpersonal Relationship ◽  
Public Health Problem ◽  
Elderly Subjects ◽  
Important Public Health Problem ◽  
Policy Makers ◽  
Formidable Challenge ◽  
Causative Factors

Summary: The Indian subcontinent comprises eight countries (India, Pakistan, Bangladesh, Nepal, Sri Lanka, Afghanistan, Bhutan, and the Maldives) and a collective population of more than 1.3 billion people. 10% of the world's suicides (more than 100,000 people) take place in just three of these countries, viz. India, Sri Lanka, and Pakistan. There is very little information on suicides from the other four countries. Some differences from suicides in Western countries include the high use of organophosphate insecticides, larger numbers of married women, fewer elderly subjects, and interpersonal relationship problems and life events as important causative factors. There is need for more and better information regarding suicide in the countries of the Indian subcontinent. In particular, studies must address culture-specific risk factors associated with suicide in these countries. The prevention of this important public health problem in an area of the world with myriad socio-economic problems, meager resources, and stigmatization of mental illness poses a formidable challenge to mental health professionals, policy makers, and governments of these countries.

Infra-red spectra of solutions of some acid salts of carboxylic acids in dimethylsulphoxide

1962 ◽  
Vol 18 (4) ◽  
pp. 1059-1064 ◽  
Author(s):  
D HADZI ◽  
A NOVAK
Keyword(s):  
Carboxylic Acids ◽  
Infra Red ◽  
Acid Salts

A convenient preparative method for 1,4-diketones from carboxylic acids

1977 ◽  
Vol 27 (1) ◽  
pp. 117-120
Author(s):  
Shoji Watanabe ◽  
Tsutomu Fujita ◽  
Kyoichi Suga ◽  
Haruhiko Abe
Keyword(s):  
Carboxylic Acids ◽  
Preparative Method

Probing The Resolution of 2-Alkoxy and 2-Aryloxy Carboxylic Acids

2006 ◽  
Author(s):  
Jason Eames ◽  
Ewan Boyd ◽  
Sameer Chavda
Keyword(s):  
Carboxylic Acids
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