ChemInform Abstract: SYNTH. UND HYDROSILYLIERUNG DES BETA‐CHLORAETHYLPROPARGYLAETHERS UND DES DIPROPARGYLAETHERS DES AETHYLENGLYKOLS

Abstract

Die Reaktion von β‐Hydroxyäthylpropargyläther (I) mit Thionylchlorid in Pyridin/ Benzol liefert β‐Chloräthylpropargyläther (II) (50% Ausbeute).

Addition of Nitrile Oxides to Silyl- And Germyl-Disubstituted Ethylenes

“…According to literature data, the hydrosilylation of mono-substituted acetylenes with trialkyl-and triarylsilanes in the presence of H 2 PtCI 5 leads, in most cases, to a mixture of £-(ß-isomer) and geminal (α-isomer) products [15][16][17][18][19][20][21][22][23][24][25], The Ε-Configuration of the ß-isomer is the result of a c/s-addition to the triple C^C bond of acetylenes [26][27][28], The ratio of the a-and ß-fEj-isomers formed in the reaction 656 Brought to you by | Purdue University Libraries Authenticated Download Date | 6/13/15 9:59 PM strongly depends upon the electron acceptor properties of the substituent R in the acetylene derivatives ROCH. According to literature data, the hydrosilylation of mono-substituted acetylenes with trialkyl-and triarylsilanes in the presence of H 2 PtCI 5 leads, in most cases, to a mixture of £-(ß-isomer) and geminal (α-isomer) products [15][16][17][18][19][20][21][22][23][24][25], The Ε-Configuration of the ß-isomer is the result of a c/s-addition to the triple C^C bond of acetylenes [26][27][28], The ratio of the a-and ß-fEj-isomers formed in the reaction 656 Brought to you by | Purdue University Libraries Authenticated Download Date | 6/13/15 9:59 PM strongly depends upon the electron acceptor properties of the substituent R in the acetylene derivatives ROCH.…”

Synthesis and Herbicidal Activities of 3‐(4‐Chloro‐2‐fluoro‐5‐substituted phenyl)benzo[d][1,2,3]triazin‐4(3H)‐one Derivatives

“…All solvents used in the reactions were distilled from appropriate drying agents prior to use. The starting materials, propargyl 2‐chloroacetate, S ‐ethyl 2‐chloroethanethioate, n ‐butyl 2‐chloroacetate, N‐(1‐cyano‐2‐methylpropan‐2‐yl)2‐chloroacetamide, N‐n ‐butyl‐2‐chloroacetamide, and 2‐chloro‐ N , N ‐diisopropylacetamide, have been reported previously, and alkyl chlorides (bromides and iodides), 2‐chloroallyl chloride, 3‐chloroallyl chloride, allyl bromide, propargyl chloride, 1‐(chloromethoxy)‐2‐methoxyethane, ethyl 2‐bromoacetate, and cyclopentyl chloroacetate were commercially available. 5‐Amino‐2‐chloro‐4‐fluoro phenyl ethyl carbonate A was prepared according to the reference .…”