## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a โFull Textโ option. The original article is trackable v
A rapid, efficient and selective conversion of aldehydes and acetals to their 1,3-dithiane derivatives with 2,2-dimethyl-2-sila-1,3-dithiane
โ Scribed by John A Soderquist; Edgar I Miranda
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 156 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Aldehydes and acetals are cleanly and rapidly converted to the corresponding dithianes with 2,2-dimethyl-2-sila-1,3-dithiane and stoichiometric amounts of boron trifluoride etherate even in the presence of ketones, which do not react competitively with the reagent.
๐ SIMILAR VOLUMES
The dithiane synthesis of carbonyl compounds, as developed by Corey and coworkers , involves the conversion of the potential carbonyl carbon into a reactive 2-lithio-1,3-dithiane. We have
Lithium enolates derived from the title esters show high diastereoface selectivity in their reactions with chiral aldehydes. The resulting 2,2-dithioaldols are desulfurized in good yield with Ni28-H2 (EtOH, 20ยฐC). With this mild desulfurization protocol, complete retention of stereochemical integrit
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract An efficient synthesis of [1,3]oxazino[3,2โ__f__]phenanthridine derivatives __via__ a threeโcomponent reaction of phenanthridine, dimethyl acetylenedicarboxylate (DMAD), and aromatic aldehydes is described. This novel method is complementary to the classical __Huisgen__ 1,4โdipolar cycl
## Abstract The multicomponent procedure allows the regioselective synthesis of the title skeleton under mild conditions.