30004-39-8Relevant academic research and scientific papers
Surface acoustic wave nebulization produces ions with lower internal energy than electrospray ionization
Huang, Yue,Turecek, Frantisek,Yoon, Sung Hwan,Heron, Scott R.,Masselon, Christophe D.,Edgar, J. Scott,Goodlett, David R.
, p. 1062 - 1070,9 (2012)
Surface acoustic wave nebulization (SAWN) has recently been reported as a novel method to transfer non-volatile analytes directly from solution to the gas phase for mass spectrometric analysis. Here we present a comparison of the survival yield of SAWN ve
Internal energy deposition for low energy, femtosecond laser vaporization and nanospray post-ionization mass spectrometry using thermometer ions
Flanigan, Paul M.,Shi, Fengjian,Archer, Jieutonne J.,Levis, Robert J.
, p. 716 - 724 (2015/05/05)
The internal energy of p-substituted benzylpyridinium ions after laser vaporization using low energy, femtosecond duration laser pulses of wavelengths 800 and 1042 nm was determined using the survival yield method. Laser vaporization of dried benzylpyridi
Determination of internal energy distributions of laser electrospray mass spectrometry using thermometer ions and other biomolecules
Flanigan, Paul M.,Shi, Fengjian,Perez, Johnny J.,Karki, Santosh,Pfeiffer, Conrad,Schafmeister, Christian,Levis, Robert J.
, p. 1572 - 1582 (2014/08/18)
(Figure Presented) The internal energy distributions for dried and liquid samples that were vaporized with femtosecond duration laser pulses centered at 800 nm and postionized by electrospray ionization-mass spectrometry (LEMS) were measured and compared
A one-pot domino reaction for the synthesis of 3-arylindolizines from pyridines, benzyl halides, and dihalide-substituted electron-deficient alkenes
Hu, Huayou,Shi, Kunbo,Hou, Rongrong,Zhang, Zaichao,Zhu, Yulan,Zhou, Jianfeng
experimental part, p. 4007 - 4014 (2011/02/22)
3-Arylindolizines were prepared by one-pot domino reactions from benzyl halides with pyridine (or isoquinoline) and cyclic or acyclic dihalide-substituted electron-deficient alkenes in the presence of potassium carbonate via in situ generated N-ylide intermediate. Both electron-donating and electron-withdrawing groups are tolerated in the aryl ring of benzyl halides. The yields range from moderate to high. Georg Thieme Verlag Stuttgart - New York.
1-Acyl-4-alkylidene-1,4-dihydropyridines, 7. Activation with Boron Trifluoride: Intermolecular Acyl Group Transfer and Formation of 1-(4-Pyridyl)-2-alkanones
Anders, Ernst,Will, Wolfgang,Stankowiak, Achim
, p. 3192 - 3204 (2007/10/02)
1-Acyl-4-alkylidene-1,4-dihydropyridines 5, representatives of the thermally stable enamides, can be activated by means of boron trifluoride 6, so the ketones 7 result from attack of 6 on 5 (intermolecular acyl group transfer).The mechanism of this reaction, which has not previously been observed for enamides, is strongly suggested to be as follows: 5 and 6 form first the adduct 21, which attacks 5 with formation of 27.Special examples of 5 (11 and 12) are found to be reactive enough that the ketone 7h or the sulfone 15 can be obtained from their isolable precursors (14 and 13) without Lewis-acid activation. 13 is particularly noteworthy: being the precursor of the salt 16, which is generated in situ, it serves as an extremely effective tosylating agent.Even tertiary alcohols are attackted by 16.
