Silica gel-supported polyphosphoric acid (PPA/SiO2) as an efficient and reusable catalyst for conversion of carbonyl compounds into oxathioacetals and dithioacetals

Synlett

Volumn , Issue 13, 2004, Pages 2307-2310

  Aoyama, Tadashi ^a   Takido, Toshio ^a   Kodomari, Mitsuo ^b  

^a NIHON UNIVERSITY   (Japan)

^b SHIBAURA INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

Dithioacetals; Oxathioacetals; Polyphsphoric acid; Protecting groups; Silica gel

Indexed keywords

ACETAL DERIVATIVE; CARBONYL DERIVATIVE; DITHIOACETAL; FUNCTIONAL GROUP; OXATHIOACETAL; OXYGEN; POLYPHOSPHATE; PROTECTING GROUP; SILICA GEL; THIOL DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; CATALYSIS; CATALYST; CATALYST SUPPORT; PRODUCT RECOVERY; RECYCLING; SYNTHESIS; TECHNIQUE;

EID: 8644280457     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2004-832812     Document Type: Article

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26. 3 was removed with rotary evaporator and the resulting solid was dried in vacuo at r.t. for 3 h.
27. 2 was recovered by filtration from the reaction mixture, and then it was put in the 50 mL round-bottom flask and dried in vacuo at 100 °C for 2 h.