Results 111 to 120 of about 9,019 (233)

OPTICALLY ACTIVE CHRYSANTHEMIC ACID AND ITS ANALOGUES [PDF]

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2010
Optically active chrysanthemic acid and its analogues have received considerable attention in recent years due to their practical importance. This review will focus on describing the developments in the synthesis of optically active chrysanthemic acid ...
L. Bets, Z. Ribkovskaia, L. Vlad, S. Pogrebnoi, F. Galin, F. Macaev   +5 more
doaj  

PET-oxidative reactions of siloxy-cyclopropanes

, 1998
Rinderhagen H, Mattay J. PET-oxidative reactions of siloxy-cyclopropanes. JOURNAL OF INFORMATION RECORDING. 1998;24(3-4):261-264.The oxidative reaction of 1-trimethysiloxy-cyclopropanes has been investigated under PET conditions.
Mattay, Jochen, Rinderhagen, H
core  

Synthesis of Trifluoromethyl-Substituted Cyclopropanes via Sequential Kharasch–Dehalogenation Reactions

, 2016
A two-step process for the synthesis of trifluoromethyl-substituted cyclopropanes is described. Halothane, an anesthetic agent, is added to olefins in a ruthenium-catalyzed Kharasch reaction.
Yanouk Cudré (1309866), Mariano A. Fernández-Zúmel (2073709), Kay Severin (1403713), Julie Risse (2073712)   +3 more
core   +1 more source

σ-Bond Hydroboration of Cyclopropanes

, 2020
Hydroboration of alkenes is a classical reaction in organic synthesis, in which alkenes react with boranes to give alkylboranes, with subsequent oxidation resulting in alcohols.
Stephan, Irle, Kenichiro, Itami, Junichiro, Yamaguchi, Shin, Miyamura, Daisuke, Yokogawa, , Arifin, Hiroki, Kondo, Chisa, Kobayashi   +7 more
core   +1 more source

Chemo-, regio- and enantioselective hydroformylation of trisubstituted cyclopropenes: access to chiral quaternary cyclopropanes

Nature Communications
Catalytic asymmetric synthesis of polysubstituted chiral cyclopropane presents a significant challenge in organic synthesis due to the difficulty in enantioselective control.
Shuailong Li, Dequan Zhang, Aiswarya Purushothaman, Hui Lv, Shilpa Shilpa, Raghavan B. Sunoj, Xiuxiu Li, Xumu Zhang   +7 more
doaj   +1 more source

Sigmatropic rearrangements - Synthesis of functionalized cyclopropanes

, 2016
Les cyclopropanes sont rencontrés dans de nombreux produits naturels ou synthétiques bioactifs. Les travaux exposés dans ce manuscrit portent sur le développement de réarrangements sigmatropiques [3,3] impliquant des dérivés de cyclopropénylcarbinols ...
Ernouf, Guillaume
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Recent Advances in the Chemistry of Doubly Activated Cyclopropanes: Synthesis and Reactivity

, 2019
Diactivated cyclopropanes containing two geminal electron withdrawing groups, commonly called as `Doubly Activated Cyclopropanes' are useful synthons for the synthesis of many interesting natural products and functionalized molecules.
Gopinath, Purushothaman, Chandrasekaran, Srinivasan   +1 more
core   +1 more source

Observation of unusual outer-sphere mechanism using simple alkenes as nucleophiles in allylation chemistry

Nature Communications
Transition-metal catalyzed allylic substitution reactions of alkenes are among the most efficient methods for synthesizing diene compounds, driven by the inherent preference for an inner-sphere mechanism.
Yaxin Zeng, Han Gao, Zhong-Tao Jiang, Yulei Zhu, Jinqi Chen, Han Zhang, Gang Lu, Ying Xia   +7 more
doaj   +1 more source

CYCLOPROPANE ANAESTHESIA [PDF]

BMJ, 1934
openaire   +2 more sources

General and Scalable Approach to Trifluoromethyl-Substituted Cyclopropanes

CF3-cyclopropanes with aliphatic, aromatic, and even heteroaromatic substituents were prepared on a multigram scale by deoxyfluorination of cyclopropane carboxylic acids or their salts with sulfur tetrafluoride.
Mykola Zheludenko (14676467), Karen Tarasenko (8044022), Andrii Boretskyi (11321349), Iryna V. Sadkova (5938487), Anton A. Klipkov (8362482), Serhii Trofymchuk (8044019), Pavel K. Mykhailiuk (579411), Volodymyr Ahunovych (11321346), Maksym Bugera (8044016), Oleh Stanko (14676464)   +9 more
core   +2 more sources