منابع مشابه
Facile approach to preparing microporous organic polymers through benzoin condensation.
A series of microporous organic networks linked by α-hydroxyl ketone were synthesized based on benzoin self-condensation of multiformyl-containing building blocks. Fourier transform infrared and solid-state (13)C CP/MAS NMR spectroscopy were utilized to confirm the α-hydroxyl ketone linkage of the obtained polymers. The hollow microspheric morphology can be observed from scanning electron micro...
متن کاملOxidation of benzoin catalyzed by oxovanadium(IV) schiff base complexes
BACKGROUND The oxidative transformation of benzoin to benzil has been accomplished by the use of a wide variety of reagents or catalysts and different reaction procedures. The conventional oxidizing agents yielded mainly benzaldehyde or/and benzoic acid and only a trace amount of benzil. The limits of practical utilization of these reagents involves the use of stoichiometric amounts of corrosiv...
متن کاملLight scattering studies on DNA condensation.
DNA condenses into compact particles when mixed with dilute solutions of trivalent cations such as spermidine or hexammine cobalt (111) (CoHex) [ 1-41. These particles are approximately the size of bacteriophage capsids and generally have a toroidal or rodlike morphology. Remarkably, the size of the condensed particles is quite insensitive to the size of the DNA [3, 51. Particles formed with T7...
متن کاملThe enantioselective benzoin condensation promoted by chiral triazolium precatalysts: stereochemical control via hydrogen bonding.
The design of a new class of triazolium ion precatalysts incorporating protic substituents is described. These materials promote the enantioselective benzoin condensation of a range of aromatic aldehydes (1-62% ee). Catalyst evaluation studies strongly support the involvement of hydrogen bond donation by the catalyst in the stereocentre-forming step of the catalytic cycle.
متن کاملMultiple use of benzoin as an aid in neurosurgical practice: the watertight benzoin dressing.
The author presents a survey of his experience with the use of benzoin as an aid to prevent and to treat wound complications as: CSF leakage ruptured meningoceles, prevention of leakage and wound infections, during the use of external cranial drainage, indwelling catheters or implanted cannulas and electrodes. A few other handy uses are also mentioned.
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1954
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.74.1_45