ChemInform Abstract: Sulfur-Mediated Intramolecular Double Michael-Type Reaction: Synthesis of trans-Hydroindans and Mechanism.

ChemInform ◽  
2010 ◽  
Vol 24 (4) ◽  
pp. no-no
Author(s):  
M. IHARA ◽  
S. SUZUKI ◽  
N. TANIGUCHI ◽  
K. FUKUMOTO ◽  
C. KABUTO
Keyword(s):  
Reaction Synthesis ◽  
Type Reaction

Predictive Kinetics-based Model for Shock-activated Reaction Synthesis of Ti3SiC2

2005 ◽  
Vol 20 (6) ◽  
pp. 1476-1484
Author(s):  
Jennifer L. Jordan ◽  
John A. Pelesko ◽  
Naresh N. Thadhani
Keyword(s):  
Heat Treatment ◽  
Activation Energy ◽  
Steady State ◽  
Predictive Model ◽  
Heat Dissipation ◽  
Experimental Results ◽  
Reaction Synthesis ◽  
Synthesis Conditions ◽  
Type Reaction ◽  
Activated State

A kinetics model based on mass and heat transport has been developed for Ti3SiC2 formation via shock-activated reaction synthesis of powder precursors. The model allows prediction of heat treatment conditions under which an otherwise steady-state reaction is taken over by a “run-away” combustion-type reaction during post-shock reaction synthesis of Ti3SiC2. Shock compression of Ti, SiC, and graphite precursors generates a densely packed highly activated state of reactants, which lowers the activation energy and results in an increased rate of formation of Ti3SiC2 at a lower temperature and in shorter times. The predictive model correlated with experimental results of fraction reacted as a function of time at heat-treatment temperatures of 1400 and 1600 °C illustrates an increased rate of reaction due to lowering activation energy, which also results in the reaction at 1600 °C being taken over by a “run-away” combustion-type reaction, as the rate of heat release due to reaction exceeds the rate of heat dissipation through the compact. Correlation of the model with experimental results illustrates that the predictive model can be used to optimize reaction synthesis conditions in shock-densified compacts of Ti3SiC2-forming powder precursors, to better understand the processes leading to a steady-state reaction being taken over by the combustion mode.

Alkyl perchlorates in the Ritter-type reaction. Synthesis of N-alkylamides

2020 ◽  
Vol 69 (5) ◽  
pp. 980-985
Author(s):  
N. V. Yashin ◽  
P. O. Markov ◽  
K. N. Sedenkova ◽  
D. A. Vasilenko ◽  
Yu. K. Grishin ◽  
...  
Keyword(s):  
Reaction Synthesis ◽  
Type Reaction

Sulfur-mediated intramolecular double Michael-type reaction: synthesis of trans-hydroindanes and mechanism

1992 ◽  
pp. 2527 ◽  
Author(s):  
Masataka Ihara ◽  
Shuichi Suzuki ◽  
Nobuaki Taniguchi ◽  
Keiichiro Fukumoto ◽  
Chizuko Kabuto
Keyword(s):  
Reaction Synthesis ◽  
Type Reaction

scholarly journals New Four-Component Ugi-Type Reaction. Synthesis of Heterocyclic Structures Containing a Pyrrolo[1,2-a][1,4]diazepine Fragment.

ChemInform ◽  
2005 ◽  
Vol 36 (29) ◽  
Author(s):  
Alexey P. Ilyn ◽  
Andrey S. Trifilenkov ◽  
Julia A. Kuzovkova ◽  
Sergey A. Kutepov ◽  
Alexandre V. Nikitin ◽  
...  
Keyword(s):  
Reaction Synthesis ◽  
Type Reaction

scholarly journals NEW FOUR-COMPONENT UGI-TYPE REACTION. SYNTHESIS OF 3-METHYL-1-OXO-1,3,4,6,11,11a-HEXAHYDRO-2H-PYRAZINO[1,2-b]ISOQUINOLINE-3-CARBOXAMIDES

2006 ◽  
Vol 12 (2) ◽  
Author(s):  
Alexey P. Ilyn ◽  
Andrey S. Trifilenkov ◽  
Denis I. Kovrigin ◽  
Michail V. Yudin ◽  
Alexandre V. Ivachtchenko
Keyword(s):  
Reaction Synthesis ◽  
Type Reaction

New Four-Component Ugi-Type Reaction. Synthesis of Heterocyclic Structures Containing a Pyrrolo[1,2-a][1,4]diazepine Fragment

2005 ◽  
Vol 70 (4) ◽  
pp. 1478-1481 ◽  
Author(s):  
Alexey P. Ilyn ◽  
Andrey S. Trifilenkov ◽  
Julia A. Kuzovkova ◽  
Sergey A. Kutepov ◽  
Alexandre V. Nikitin ◽  
...  
Keyword(s):  
Reaction Synthesis ◽  
Type Reaction

Cerium-catalyzed reformatsky-type reaction with ethyl bromosuccinate for the synthesis of γ-lactones

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
S Muniz Machado Rodrigues ◽  
GVJ da Silva ◽  
M Gomes Constantino
Keyword(s):  
Type Reaction
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