Pomeranz–Fritsch Synthesis of Isoquinoline: Gas-Phase Collisional Activation Opens Additional Reaction Pathways

2017 ◽  
Vol 139 (41) ◽  
pp. 14352-14355 ◽  
Author(s):  
Shibdas Banerjee ◽  
Fang Liu ◽  
David M. Sanchez ◽  
Todd J. Martínez ◽  
Richard N. Zare
Keyword(s):  
Gas Phase ◽  
Collisional Activation ◽  
Reaction Pathways

Generation and Reactivity of Chromium Fluoride Cations (CrF+n, n = 0-4) in the Gas Phase

1998 ◽  
Vol 63 (9) ◽  
pp. 1498-1512 ◽  
Author(s):  
Ulf Mazurek ◽  
Detlef Schröder ◽  
Helmut Schwarz
Keyword(s):  
Gas Phase ◽  
Bond Activation ◽  
Branching Ratio ◽  
Radical Cations ◽  
Reaction Pathways ◽  
Ion Cyclotron Resonance ◽  
Ion Transfer ◽  
Consistent Picture ◽  
Anion Transfer ◽  
Chain Lengths

Gaseous chromium fluoride monocations CrFn+ (n = 1-4) can be prepared by sequential fluorine-atom transfer from nitrogen trifluoride, NF3, to chromium cation. In addition, formal F- anion transfer to CrFn+ (n = 2-4) to yield the corresponding neutral chromium fluorides CrFn+1 is observed. In conjunction with a re-evaluation of previous data, the present results provide a consistent picture of the thermochemistry of neutral and cationic chromium fluorides. The reactivity of the CrFn+ ions towards alkanes is investigated in a Fourier-transform ion cyclotron resonance mass spectrometer. While "bare" Cr+ does not react with alkanes, the chromium fluoride cations CrFn+ do; CrF3+ and CrF4+ are even capable of activating methane. With both increasing oxidation state of chromium and increasing chain lengths of the alkane, the branching ratio of the possible reaction pathways shifts from homolytic C-H and C-C bond activation to hydride- and methanide-ion transfer to yield carbocations, and finally electron transfer generating hydrocarbon radical cations.

Multiple reaction pathways of Fe(η5-C5H5)+ in the gas phase

1992 ◽  
Vol 27 (7) ◽  
pp. 840-842 ◽  
Author(s):  
Walter J. Gwathney ◽  
Li Lin ◽  
Charles Kutal ◽  
I. Jonathan Amster
Keyword(s):  
Gas Phase ◽  
Reaction Pathways

Dehydrogenation of icosahedral carborane anions via gas-phase collisional activation

2016 ◽  
Vol 30 (10) ◽  
pp. 1223-1227
Author(s):  
Omar M. Hamdy ◽  
Huong T. Pham ◽  
Scott G. McArthur ◽  
Vincent Lavallo ◽  
Ryan R. Julian
Keyword(s):  
Gas Phase ◽  
Collisional Activation ◽  
Carborane Anions

Collisional activation of captured intermediates in the gas-phase SN2 reaction chloride + bromomethane .fwdarw. bromide + chloromethane

1991 ◽  
Vol 113 (25) ◽  
pp. 9697-9699 ◽  
Author(s):  
Donna M. Cyr ◽  
Lynmarie A. Posey ◽  
Gregory A. Bishea ◽  
Chau Chung Han ◽  
Mark A. Johnson
Keyword(s):  
Gas Phase ◽  
Collisional Activation ◽  
Sn2 Reaction

Efficient isomerization of Si(C2H5)H2+ to Si(CH3)2H+ by collisional activation in the gas phase

1993 ◽  
Vol 12 (3) ◽  
pp. 621-623 ◽  
Author(s):  
R. Bakhtiar ◽  
C. M. Holznagel ◽  
D. B. Jacobson
Keyword(s):  
Gas Phase ◽  
Collisional Activation
Sign in / Sign up

Export Citation Format

Share Document