89429-83-4Relevant academic research and scientific papers
Convergent Synthesis of a Trans-fused 6-7-6 Tricyclic Ether System Based on a Ring-closing Metathesis Reaction
Oishi, Tohru,Nagumo, Yoko,Hirama, Masahiro
, p. 980 - 982 (2007/10/03)
Synthesis of a trans-fused 6-7-6 tricyclic ether system was achieved via stereoselective acetal formation, reductive cleavage of the acetal, and a ring-closing metathesis reaction.
RELATION STRUCTURE-FRAGMENTATION SOUS IMPACT ELECTRONIQUE. II STEREOSPECIFICITE DES REARRANGEMENTS A UN ET DEUX HYDROGENES EN SERIE TRIOXA-2,4,7-PHOSPHA-3 BICYCLO (4,4,0) DECANE
Bouchu, D.,Fraisse, D.
, p. 189 - 204 (2007/10/02)
The origin of the hydrogen atoms implicated in the single and double hydrogen rearrangements(leading to + and ++ ions, whose relative abondance is typical of the phosphorus configuration) was investigated by means of selective deuteriation of the β and γ carbon (relative to phosphorus) of the isomeric 2,4,7-trioxa-3-methyl-3-phospha-3-thionobicyclo (4,4,0) decanes 1a and 1b.For both isomers the β hydrogen atoms are involved predominantly in the single hydrogen rearrangement.In the case of the double hydrogen rearrangement the hydrogens H1(β) and H10, H10'(γ) for the a isomer and H6(γ) and H10, H10'(γ) for the b isomer are preferentialy transferred.The proposed fragmentation mechanisms attempt to explain the effect of the P=S bond orientation on the fragmentation stereospecificity.
