Reaction Pathways and Possible Path Bifurcation for the Schmidt Reaction

2010 ◽  
Vol 132 (10) ◽  
pp. 3413-3422 ◽  
Author(s):  
Tetsuji Katori ◽  
Shuhei Itoh ◽  
Makoto Sato ◽  
Hiroshi Yamataka
Keyword(s):  
Reaction Pathways ◽  
Schmidt Reaction ◽  
Path Bifurcation

ChemInform Abstract: Remodeling and Enhancing Schmidt Reaction Pathways in Hexafluoroisopropanol.

ChemInform ◽  
2016 ◽  
Vol 47 (27) ◽  
Author(s):  
Hashim F. Motiwala ◽  
Manwika Charaschanya ◽  
Victor W. Day ◽  
Jeffrey Aube
Keyword(s):  
Reaction Pathways ◽  
Schmidt Reaction

Remodeling and Enhancing Schmidt Reaction Pathways in Hexafluoroisopropanol

2016 ◽  
Vol 81 (4) ◽  
pp. 1593-1609 ◽  
Author(s):  
Hashim F. Motiwala ◽  
Manwika Charaschanya ◽  
Victor W. Day ◽  
Jeffrey Aubé
Keyword(s):  
Reaction Pathways ◽  
Schmidt Reaction

Reactions of an Aluminium(I) Reagent with 1,2-, 1,3- and 1,5-Dienes: Dearomatisation, Reversibility, and a Pericyclic Mechanism

2019 ◽  
Author(s):  
Clare Bakewell ◽  
Martí Garçon ◽  
Richard Y Kong ◽  
Louisa O'Hare ◽  
Andrew J. P. White ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Dft Calculations ◽  
Transition State ◽  
Reaction Pathways ◽  
Aromatic Rings ◽  
Aromatic Character ◽  
Pericyclic Reaction

The reactions of an aluminium(I) reagent with a series of 1,2-, 1,3- and 1,5-dienes are reported. In the case of 1,3-dienes the reaction occurs by a pericyclic reaction mechanism, specifically a cheletropic cycloaddition, to form aluminocyclopentene containing products. This mechanism has been interrogated by stereochemical experiments and DFT calculations. The stereochemical experiments show that the (4+1) cycloaddition follows a suprafacial topology, while calculations support a concerted albeit asynchronous pathway in which the transition state demonstrates aromatic character. Remarkably, the substrate scope of the (4+1) cycloaddition includes dienes that are either in part, or entirely, contained within aromatic rings. In these cases, reactions occur with dearomatisation of the substrate and can be reversible. In the case of 1,2- or 1,5-dienes complementary reactivity is observed; the orthogonal nature of the C=C π-bonds (1,2-diene) and the homoconjugated system (1,5-diene) both disfavour a (4+1) cycloaddition. Rather, reaction pathways are determined by an initial (2+1) cycloaddition to form an aluminocyclopropane intermediate which can in turn undergo insertion of a further C=C π-bond leading to complex organometallic products that incorporate fused hydrocarbon rings.

Gold Catalyzed Hydroamination of Propargylic Alcohols: Controlling Divergent Reaction Pathways to Access 1,3-Aminoalcohols, 3-Hydroxyketones or 3-Aminoketones

2018 ◽  
Author(s):  
Victor Laserna ◽  
Tom Sheppard
Keyword(s):  
Gold Catalysis ◽  
Reaction Pathways ◽  
High Yield ◽  
Reaction Conditions ◽  
Propargylic Alcohols ◽  
Catalytic Quantity ◽  
Selective Formation ◽  
General Method

A versatile approach to the valorization of propargylic alcohols is reported, enabling controlled access to three different products from the same starting materials. Firstly, a general method for the hydroamination of propargylic alcohols with anilines is described using gold catalysis to give 3-hydroxy imines with complete regioselectivity. These 3-hydroxyimines can be reduced to give 1,3-aminoalcohols with high syn seletivity. Alternatively, by using a catalytic quantity of aniline, 3-hydroxyketones can be obtained in high yield directly from propargylic alcohols. Further manipulation of the reaction conditions enables the selective formation of 3-aminoketones via a rearrangement/hydroamination pathway.<br>

Fundamental reaction pathways during coprocessing: Quarterly status and milestone report

1988 ◽  
Author(s):  
L. M. Stock ◽  
J. G. Gatsis ◽  
Kadim Ceylan ◽  
Kofi Ofosu-Asante
Keyword(s):  
Reaction Pathways

Über den Mechanismus der Bildung von Polyanionen in wäßriger Lösung. Zum Bildungsmechanismus eines Polytetramolybdations [Mo4O144-]n / On the Mechanism of Formation of Polyanions in Aqueous Solution. Concerning the Mechanism of Formation of a Polytetramolybdate Ion [Mo4O144-]n

1976 ◽  
Vol 31 (6) ◽  
pp. 737-748 ◽  
Author(s):  
Karl-Heinz Tytko
Keyword(s):  
Aqueous Solution ◽  
Coordination Sphere ◽  
Analytical Formula ◽  
Reaction Pathways ◽  
Mechanism Of Formation ◽  
X Ray ◽  
Theoretical Considerations

Possible structures and the pertinent reaction pathways for the polymetalate ion present in a slightly soluble polymetalate having the analytical formula A2O · 2 MOs have been derived on the basis of theoretical considerations. Structure and kind of combination of the tetrameric units of one of the possibilities are in agreement with the results of X-ray structure analyses. First the previously proposed planar tetrametalate ion [M4O12(OH)4]4--is formed by stepwise aggregation according to an addition mechanism. This species undergoes a rearrangement of the coordination sphere of two of the M atoms and is then subject to a polycondensation resulting in a polytetrametalate chain, [M4O144-]n.

A kinetic analysis of distinct reaction pathways in methanol electrocatalysis on Pt(111)

1998 ◽  
Vol 44 (6-7) ◽  
pp. 1127-1134 ◽  
Author(s):  
S. Sriramulu ◽  
T.D. Jarvi ◽  
E.M. Stuve
Keyword(s):  
Kinetic Analysis ◽  
Reaction Pathways
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