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Search Publications by: Anzor I. Mikaia (Fed)

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Displaying 26 - 50 of 79

Classification and treatment of errors in reference mass spectra

February 27, 1994
Author(s)
Anzor I. Mikaia, S G. Lias, Stephen E. Stein
Requirements to reference spectra and criteria for mass spectrum inclusion, modification and deletion are developed as a result of evaluation of thousands of spectra and analysis of encountered errors. Errors due to a sample, device and operator, data

The control of quality in a comprehensive mass spectral library

May 30, 1993
Author(s)
Anzor I. Mikaia, S G. Lias, Stephen E. Stein
Computer generated "Quality Index" for the selection of spectra for the inclusion to the NIST/EPA/NIH mass spectral library is abandoned. We have undertaken a program to manually examine all spectra in the database. Suspect spectra are first examined to

Mass spectrometry of derivatives and heterocyclic analogues of 9,10-dihydroanthracene

January 1, 1991
Author(s)
Anzor I. Mikaia, Vladimir G. Zaikin, Alexey V. Varlamov, Nikolay A. Prostakov
Fragmentation of derivatives of 9,10-dihydroanthracene and of its heterocyclic analogues containing atoms of O, S, N, P, Si, As, Se and Te at positions 9 and/or 10 is examined. The conditions reviewed are electron impact and chemical ionization in positive

A method for the synthesis of N-alkylpiperidynes.

June 27, 1990
Author(s)
Anzor I. Mikaia, George A. Kliger, OA Lesik, EV Marchevskaya, Vladimir G. Zaikin, Leonid S. Glebov, Sergai Loktev
Reaction gas chromatography–mass spectrometry is applied to establish optimal conditions for the synthesis of N-alkylpiperidynes. Further optimization of the reaction was carried out in a pilot plant.

A method for the synthesis of bi- , tri- and tetracyclic hydrocarbons with five membered rings

January 29, 1990
Author(s)
Anzor I. Mikaia, Anton Shuikin, Leonid S. Glebov, Alexey Yatsenko, Vladimir G. Zaikin, George A. Kliger, Sergai Loktev
Reaction gas chromatography–mass spectrometry is applied to establish optimal conditions for the synthesis of bi- , tri- and tetracyclic hydrocarbons with five membered rings. Further optimization of the reaction was carried out in a pilot plant.

A method for the synthesis of pyrrolidine

July 5, 1988
Author(s)
Anzor I. Mikaia, George A. Kliger, OA Lesik, EV Marchevskaya, VP Rijikov, Sergai Loktev
Reaction gas chromatography–mass spectrometry is applied to establish optimal conditions for the synthesis of … Further optimization of the reaction was carried out in a pilot plant

A method for the synthesis of bi- and polycyclic hydrocarbons

March 5, 1987
Author(s)
Anzor I. Mikaia, Leonid S. Glebov, Vladimir G. Zaikin, Alexey Yatsenko, OA Lesik, George A. Kliger, Sergai Loktev
Reaction gas chromatography–mass spectrometry is applied to establish optimal conditions for the synthesis of bi- and polycyclic hydrocarbons. Further optimization of the reaction was carried out in a pilot plant.

Mass spectrometric study of 1,2,4- and 1,3,4-oxadiazoles containing indole substituents.

April 1, 1986
Author(s)
Anzor I. Mikaia, Rosa Ushakova, Vladimir G. Zaikin, VI Kelarev, GA Shveikhgeimer
Under electron ionization major fragmentation pathways for indolyloxadiazoles proceed via cleavage of C-O, C-N and N-O bonds in the oxadiazole ring. Skeletal rearrangements due to a migration of aryl groups are detected for diaryl1,3,4-oxadiazoles.

Silylation of carbonyl compounds in a chromate-mass spectrometer column

March 1, 1986
Author(s)
Anzor I. Mikaia, Alexey Yatsenko, Leonid S. Glebov, Vladimir G. Zaikin
General and specific fragmentation pathways of trimethylsilyl derivatives of ketones and aldehydes under electron ionization are determined. The derivatives are obtained as a result of on-column silylation.

Chemical methods in organic mass spectrometry

January 1, 1986
Author(s)
Anzor I. Mikaia, Vladimir G. Zaikin
The book describes various derivatization approaches employed prior GC-MS experiments for structure elucidation of organic compounds.

Mass Spectrometry of Organic Compounds

January 1, 1986
Author(s)
Anzor I. Mikaia, Vladimir G. Zaikin, Nikolai Vul'fson
Tutorial book on mass spectrometry, instrumentation and mainly fragmentation of organic compounds.