Chemistry of the Podocarpaceae. XL. Conversion of methyl 12-Hydroxypodocarpa-8,11,13-trien-19-oate into Methyl 13-hydroxypodocarpa-8,11,13-trien-19-oate

1972 ◽  
Vol 25 (6) ◽  
pp. 1253 ◽  
Author(s):  
RC Cambie ◽  
KP Mathai ◽  
AW Missen
Keyword(s):  

Methods for the conversion of methyl (+)-12-hydroxypodocarpa-8,11,13- trien-19-oate (7) into the synthetically more useful compound methyl (+)-13-methoxypodocarpa-8,11,13-trien-19-oate (8) have been investigated. In the most favourable case, the transformation has been effected in c. 57% yield by a five-stage sequence involving hydrogenolysis of the 13-amino-12-tosylate (31) with Raney nickel.

1982 ◽  
Vol 47 (12) ◽  
pp. 3230-3235 ◽  
Author(s):  
Olga Marholová ◽  
Karel Smrček

A hydrophobic porous hydrogen anode was prepared whose electrochemical parameters are comparable with anodes containing a platinum catalyst. For its successful preparation, oxidation of the Raney nickel catalyst with air oxygen or with fluorine from Teflon must be prevented. The electrodes of a geometric surface area up to 450 cm2 were tested in cells and modules filled with 7M-KOH.


1982 ◽  
Vol 77 (3) ◽  
pp. 1540-1547 ◽  
Author(s):  
R. R. Cavanagh ◽  
R. D. Kelley ◽  
J. J. Rush

1978 ◽  
Vol 9 (1) ◽  
Author(s):  
V. G. KUL'NEVICH ◽  
Z. I. ZELIKMAN ◽  
ZH. V. KAPUSTYANSKAYA ◽  
V. G. GLUKHOVTSEV ◽  
S. E. TKACHENKO ◽  
...  
Keyword(s):  

1944 ◽  
Vol 66 (7) ◽  
pp. 1218-1220 ◽  
Author(s):  
Herbert E. Ungnade ◽  
Dorothy V. Nightingale
Keyword(s):  

2014 ◽  
Vol 69 (8) ◽  
pp. 906-912 ◽  
Author(s):  
Michael Ritte ◽  
Clemens Bruhn ◽  
Ulrich Siemeling

The P,N-substituted ferrocene [Fe{η5-C5H4-P(S)Ph2}(η5-C5H4-NHCH2tBu)] was prepared in six steps from the bromo derivative [Fe{η5-C5H4-PPh2}(η5-C5H4-Br)]. Its reductive desulfurisation with Raney nickel afforded the corresponding phosphino-substituted derivative [Fe(η5-C5H4- PPh2)(η5-C5H4-NHCH2tBu)]. Both compounds have been structurally characterised by singlecrystal X-ray diffraction studies.


Sign in / Sign up

Export Citation Format

Share Document