Tetrahedron p. 8635 - 8642 (1997)
Update date:2022-08-02
Topics:
Poh, Bo-Long
Ng, Yian Yian
A water-soluble cyclic tetramer 3 has been synthesized from reacting 5-sulfonatotropolone with formaldehyde. In D2O at 25°C it existed in three major conformations (cone, 1,2-alternate and 1,3-alternate) with a trace amount of partial cone conformation. The latter increased with temperature. All the four conformers were observed in DMSO-d6 at 25°C.
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