Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

4.5- Diphenyl-1,3,2-dioxathiolane 2-oxide

Ethylene, /3-(dimethylamino)-nitro-in pyrrole synthesis, 4, 334 Ethylene, dithienyl-in photochromic processes, 1, 387 Ethylene, furyl-2-nitro-dipole moments, 4, 555 Ethylene, l-(3-indolyl)-2-(pyridyl)-photocyclization, 4, 285 Ethylene, l-(2-methyl-3-indolyl)-l,2-diphenyl-synthesis, 4, 232 Ethylene, (phenylthio)-photocyclization thiophenes from, 4, 880 Ethylene carbonate C NMR, 6, 754 microwave spectroscopy, 6, 751 photochemical chlorination, 6, 769 synthesis, 6, 780 Ethylene oxide as pharmaceutical, 1, 157 thiophene synthesis from, 4, 899 Ethylene sulfate — see 2,2-dioxide under 1,3,2-Dioxathiolane... [Pg.623]

The reaction of phenylmagnesium bromide with 1,3,2-dioxathiolane 2-oxide (16) gave 3.4-23% ethylene bromohydrin (131) and 42-60% diphenyl sulfoxide (132), depending on the conditions of the reaction. The bromohydrin (131) arises from a nucleophilic displacement at carbon by bromide ion, presumably via (129) and (130), while the sulfoxide (132) is formed by repeated attack of the Grignard reagent at sulfur (56JA454). [Pg.878]

Interestingly, thermal decomposition of 4,5-diphenyl-l,3,2-dioxathiolane 2-oxide depends on the stereochemistry of the starting diols. For example, the cyclic sulfite derived from meso-hydrobenzoin (66a) decomposed on heating to give a good yield of desoxybenzoin (67), while the trans isomer 66b (derived from if/-hydrobenzoin) furnished diphenylacetaldehyde (68) quantitatively [Eqs. (16) and (17)]. [Pg.125]

Photolysis of meso- and d/-4,5-diphenyl-l,3,2-dioxathiolane 2-oxide also furnished similar products. The formation of different products is rationalized in term of the pathways shown in Scheme 16. [Pg.126]


See other pages where 4.5- Diphenyl-1,3,2-dioxathiolane 2-oxide is mentioned: [Pg.558]    [Pg.606]    [Pg.606]    [Pg.606]    [Pg.606]    [Pg.553]    [Pg.558]    [Pg.566]    [Pg.874]    [Pg.875]    [Pg.865]    [Pg.868]    [Pg.874]    [Pg.875]    [Pg.190]   


SEARCH



1.3- Dioxathiolane

3.5- Diphenyl- -4-oxid

4.5- Diphenyl-l ,3,2-dioxathiolane 2-oxide

Dioxathiolanes

Diphenyl Oxide

© 2024 chempedia.info