Satyamurthy, Nagichettiar published the artcileSynthesis and stereochemistry of 1-oxa-6-heteraspiro[2.5]octanes. Single-crystal analysis of 6-phenyl-1-oxa-6-phosphaspiro[2.5]octane 6-sulfide, Recommanded Product: trimethyloxosulphonium chloride, the publication is Phosphorus and Sulfur and the Related Elements (1984), 19(1), 113-29, database is CAplus.
The synthesis of several title spiro compounds is reported. Stereochem. anal. via NMR studies and single-crystal x-ray diffraction of 6-phenyl-1-oxa-6-phosphaspiro[2.5]octane 6-sulfide provide the basis for correlations of structures for other members of the families yet unknown. The phosphorinane ring assumes a slightly flattened chair conformation with the Ph-P bond equatorial and the P:S bond axial. The plane of the epoxide is virtually coincident with a pseudo-mirror plane through P(6), C(3), C(9) and S(15). The Ph group is rotated out of this plane by 28.2°. Although the P-ring C distances are 1.813(3) and 1.819(3) Å, resp., and appear about normal, the P-Ph bond of 1.813(3) Å is longer than that in a few model systems. The C(3)-O(1) bond in the epoxide is axial, or rather pseudo-axial. Ring deformations are consistent with a few model epoxides. Epoxidation of cis-2,6-diphenyl-4-thianone with Me2S(O):CH2 in DMSO led, surprisingly, to a tertiary alc., presumably via ring cleavage of the expected intermediate epoxide.
Phosphorus and Sulfur and the Related Elements published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Recommanded Product: trimethyloxosulphonium chloride.
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