Leaving Group Property of Dimethyl Sulfide

2010 ◽  
Vol 75 (11) ◽  
pp. 3851-3854 ◽  
Author(s):  
Sandra Jurić ◽  
Bernard Denegri ◽  
Olga Kronja
1981 ◽  
Vol 20 (11) ◽  
pp. 3728-3730 ◽  
Author(s):  
Massimiliano. Bonivento ◽  
Luciano. Canovese ◽  
Lucio. Cattalini ◽  
Giampaolo. Marangoni ◽  
Gianni. Michelon ◽  
...  

2018 ◽  
Author(s):  
Marc Montesinos-Magraner ◽  
Matteo Costantini ◽  
Rodrigo Ramirez-Contreras ◽  
Michael E. Muratore ◽  
Magnus J. Johansson ◽  
...  

Asymmetric cyclopropane synthesis currently requires bespoke strategies, methods, substrates and reagents, even when targeting similar compounds. This limits the speed and chemical space available for discovery campaigns. Here we introduce a practical and versatile diazocompound, and we demonstrate its performance in the first unified asymmetric synthesis of functionalized cyclopropanes. We found that the redox-active leaving group in this reagent enhances the reactivity and selectivity of geminal carbene transfer. This effect enabled the asymmetric cyclopropanation of a wide range of olefins including unactivated aliphatic alkenes, enabling the 3-step total synthesis of (–)-dictyopterene A. This unified synthetic approach delivers high enantioselectivities that are independent of the stereoelectronic properties of the functional groups transferred. Our results demonstrate that orthogonally-differentiated diazocompounds are viable and advantageous equivalents of single-carbon chirons<i>.</i>


Agrotek ◽  
2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Mecky Sagrim

Aim of the research as follows: (1) inquisitive about variation of laws in regulating agrarian resources use, (2) function of traditional law in regulation at used of natural resources and related with existence on natural preservation-in formal law, and (3) inquiring influence outsider intervention to local institutions with the agrarian structure and relationship between expectation agrarian conflict. The unity of the study is Arfak community-as much as local community- was that administrative limited seatle in certain locations around natural preservation area of the Arfak Mountain. The trategy of the research is case study, while analysis of the data with qualitative manner. Result of the research is in the locations study beside property right of local community and movement of Arfak community from high land include at the resettlement programme. Not a problem related with economic subsistence with economic un-security because group property right community give free to the movement community for use to agriculture developing. For developing concept of forest sustainable as nit side to one side, income several NGO as well as role as institution relationship (young-shoot autonomy) for accommodation importance various party supra-village in relationship with existence natural preservation area of the Arfak Mountain and the party of local community in related of security in economic subsistence.


2016 ◽  
Vol 3 (2) ◽  
pp. 145-159
Author(s):  
Marija Skvorcova ◽  
Aigars Jirgensons

2012 ◽  
Vol 7 (4) ◽  
pp. 181-185 ◽  
Author(s):  
Andrew W. B. Johnston ◽  
Andrew R. J. Curson ◽  
Jonathan D. Todd
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document