Tris(3,6-dioxaheptyl)amine: A superior complexing agent for dissolving metal reactions
作者:Ajay K. Bose、Pietro Mangiaracina
DOI:10.1016/s0040-4039(00)95452-2
日期:1987.1
Commercially available tris(3,6-dioxaheptyl)amine (TDA-1) is an effective phase transfer catalyst for reactions with sodium-potassium alloy in tetrahydrofuran. Deoxygenation of acetates, dehalogenation, and hydrolysis of tosylates and mesylates proceed in high yield. The use of a deuterated alcohol during deoxygenation reactions leads to site-specific deuteration.
Circular dichroism and optical rotatory dispersion of some hexahydroindanone derivatives; methyl- and methylene-substituted steroid ketones
作者:M. J. Brienne、A. Heymes、J. Jacques、G. Snatzke、W. Klyne、S. R. Wallis
DOI:10.1039/j39700000423
日期:——
Circulardichroism and opticalrotatorydispersion curves of a number of steroid hexahydroindanones have been measured. The compounds were A-nor-5α-androstan-2-ones and 5α-androstan-16-ones carrying methyl groups in positions adjacent to carbonyl. The curves are discussed in relation to the probable conformations of the cyclopentanone ring. Some data on related αβ-unsaturated ketones are also included