ChemInform Abstract: A Practical Method for Optical Resolution of Racemic Alcohols or Esters via Lipase-Catalyzed Transformation and Sulfation.

ChemInform ◽  
2000 ◽  
Vol 31 (39) ◽  
pp. no-no
Author(s):  
Toru Yamano ◽  
Fumio Kikumoto ◽  
Shozo Yamamoto ◽  
Katsuhiko Miwa ◽  
Mitsuru Kawada ◽  
...  
Keyword(s):  
Optical Resolution ◽  
Practical Method

A Practical Method for Optical Resolution of Racemic Alcohols or Esters via Lipase-Catalyzed Transformation and Sulfation

2000 ◽  
Vol 29 (5) ◽  
pp. 448-449 ◽  
Author(s):  
Toru Yamano ◽  
Fumio Kikumoto ◽  
Shozo Yamamoto ◽  
Katsuhiko Miwa ◽  
Mitsuru Kawada ◽  
...  
Keyword(s):  
Optical Resolution ◽  
Practical Method

scholarly journals Practical Method for the Synthesis and Optical Resolution of Axially Dissymmetric 6,6′-Dimethylbiphenyl-2,2′-dicarboxylic Acid

1987 ◽  
Vol 60 (10) ◽  
pp. 3659-3662 ◽  
Author(s):  
Shigeyoshi Kanoh ◽  
Hiroki Muramoto ◽  
Natsumi Kobayashi ◽  
Masatoshi Motoi ◽  
Hiroshi Suda
Keyword(s):  
Dicarboxylic Acid ◽  
Optical Resolution ◽  
Practical Method

scholarly journals A Practical Method for Optical Resolution of 1,1′-Binaphthyl-2,2′-dicarboxylic Acid via 1-Phenylethylamides

1989 ◽  
Vol 62 (3) ◽  
pp. 956-957 ◽  
Author(s):  
Shuichi Ôi ◽  
Yutaka Matsuzaka ◽  
Junzo Yamashita ◽  
Sotaro Miyano
Keyword(s):  
Dicarboxylic Acid ◽  
Optical Resolution ◽  
Practical Method

The role of differential phase contrast in electron microscopy

1978 ◽  
Vol 36 (1) ◽  
pp. 176-177
Author(s):  
E.M. Waddell ◽  
J.N. Chapman ◽  
R.P. Ferrier
Keyword(s):  
Phase Contrast ◽  
Practical Method ◽  
Position Vector ◽  
Differential Phase ◽  
Pure Phase ◽  
Differential Phase Contrast ◽  
The Difference ◽  
Image Position ◽  
First Moment

Dekkers and de Lang (1977) have discussed a practical method of realising differential phase contrast in a STEM. The method involves taking the difference signal from two semi-circular detectors placed symmetrically about the optic axis and subtending the same angle (2α) at the specimen as that of the cone of illumination. Such a system, or an obvious generalisation of it, namely a quadrant detector, has the characteristic of responding to the gradient of the phase of the specimen transmittance. In this paper we shall compare the performance of this type of system with that of a first moment detector (Waddell et al.1977).For a first moment detector the response function R(k) is of the form R(k) = ck where c is a constant, k is a position vector in the detector plane and the vector nature of R(k)indicates that two signals are produced. This type of system would produce an image signal given bywhere the specimen transmittance is given by a (r) exp (iϕ (r), r is a position vector in object space, ro the position of the probe, ⊛ represents a convolution integral and it has been assumed that we have a coherent probe, with a complex disturbance of the form b(r-ro) exp (iζ (r-ro)). Thus the image signal for a pure phase object imaged in a STEM using a first moment detector is b2 ⊛ ▽ø. Note that this puts no restrictions on the magnitude of the variation of the phase function, but does assume an infinite detector.

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