scholarly journals Synthesisi of Erythrina and Related Alkaloids. Part XLVII. General Method for Synthesis of Erythrinan and Homoerythrinan Alkaloids (1): Synthesis of a Cycloerythrinan, as a Key Intermediate to Erythrina Alkaloids, by Pummerer-Type Reaction.

1998 ◽  
Vol 46 (6) ◽  
pp. 906-912 ◽  
Author(s):  
Jun TODA ◽  
Yoshihiro NIIMURA ◽  
Kaoru TAKEDA ◽  
Takehiro SANO ◽  
Yoshisuke TSUDA
Keyword(s):  
Type Reaction ◽  
Erythrina Alkaloids ◽  
General Method

General Method for an Aldol-Type Reaction of 2-Methylbenzothiazole with Carbonyl Compounds

Synthesis ◽  
1986 ◽  
Vol 1986 (05) ◽  
pp. 375-377 ◽  
Author(s):  
Hidenori Chikashita ◽  
Seiji Ikegami ◽  
Takeshi Okumura ◽  
Kazuyoshi Itoh
Keyword(s):  
Carbonyl Compounds ◽  
Type Reaction ◽  
General Method

scholarly journals Exploration of Oxidative Ritter-Type Reaction of α-Arylketones and Its Application for the Collective Total Syntheses of Erythrina Alkaloids

CCS Chemistry ◽  
2021 ◽  
pp. 1-28
Author(s):  
Meng-En Chen ◽  
Shi-Zhong Tang ◽  
Yue-Hong Hu ◽  
Qin-Tong Li ◽  
Zhang-Yan Gan ◽  
...  
Keyword(s):  
Total Syntheses ◽  
Type Reaction ◽  
Erythrina Alkaloids

ChemInform Abstract: General Method for an Aldol-Type Reaction of 2-Methylbenzothiazole with Carbonyl Compounds.

1986 ◽  
Vol 17 (43) ◽  
Author(s):  
H. CHIKASHITA ◽  
S. IKEGAMI ◽  
T. OKUMURA ◽  
K. ITOH
Keyword(s):  
Carbonyl Compounds ◽  
Type Reaction ◽  
General Method

General Method for Synthesis of Erythrinan and Homoerythrinan Alkaloids (2): Application of Pummerer-Type Reaction to the Synthesis of Homoerythrinan Ring System

Heterocycles ◽  
1998 ◽  
Vol 48 (8) ◽  
pp. 1599 ◽  
Author(s):  
Takehiro Sano ◽  
Jun Toda ◽  
Yoshihiro Niimura ◽  
Yoshisuke Tsuda
Keyword(s):  
Ring System ◽  
Type Reaction ◽  
General Method

A General Method for Spectrometer Design in the Scoff Approximation

1976 ◽  
Vol 34 ◽  
pp. 538-539
Author(s):  
J. R. Fields
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Energy Analysis ◽  
Incident Beam ◽  
Scanning Transmission Electron Microscope ◽  
Chemical Identification ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
General Method

The energy analysis of electrons scattered by a specimen in a scanning transmission electron microscope can improve contrast as well as aid in chemical identification. In so far as energy analysis is useful, one would like to be able to design a spectrometer which is tailored to his particular needs. In our own case, we require a spectrometer which will accept a parallel incident beam and which will focus the electrons in both the median and perpendicular planes. In addition, since we intend to follow the spectrometer by a detector array rather than a single energy selecting slit, we need as great a dispersion as possible. Therefore, we would like to follow our spectrometer by a magnifying lens. Consequently, the line along which electrons of varying energy are dispersed must be normal to the direction of the central ray at the spectrometer exit.

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