4-silyloxybenzothiopyrylium-salts: A new tool for the stereoselective annulation of s-heterocycles

Organosilicon Chemistry II: From Molecules to Materials

Volumn , Issue , 1996, Pages 219-224

  Beifuss, Uwe ^a   Gehm, Henning ^a   Tietze, Mario ^a  

^a UNIVERSITY OF GÖTTINGEN   (Germany)

Author keywords

Annulation; Lutidine; Molecules; Thiochromanone; Trialkylsilyltriflate

Indexed keywords

1 ,3 BUTADIENE; ANNULATION; HETEROCYCLES; LUTIDINE; STEREO-SELECTIVE; THIOCHROMANONE; TRIALKYLSILYLTRIFLATE;

MOLECULES;

EID: 84955696636     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1002/9783527619894.ch29     Document Type: Chapter

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17. The keto-silylenolether 17 was obtained by 2,6-lutidiniumtriflate mediated reaction of 6 with 8a. After 50% consumption of the 2-silyloxy-1,3-butadiene 8a the reaction was worked up and besides 50 % of the starting material 8a 19 % of 9a and 16 % of 17 were isolated.