Steroidal adducts. II. Stereoselectivity in .gamma.-lactone synthesis from a steroidal cyclic anhydride

1970 ◽  
Vol 35 (3) ◽  
pp. 558-561 ◽  
Author(s):  
Mary E. Birckelbaw ◽  
P. W. Le Quesne ◽  
Clarice K. Wocholski
Keyword(s):  
Cyclic Anhydride ◽  
Lactone Synthesis

scholarly journals Lactone Synthesis by Enantioselective Orthogonal Tandem Catalysis

2019 ◽  
Vol 131 (28) ◽  
pp. 9585-9590
Author(s):  
Sourabh Mishra ◽  
Aaron Aponick
Keyword(s):  
Tandem Catalysis ◽  
Lactone Synthesis

A novel antileukemic sesquiterpene lactone. Synthesis of racemic eriolanin

1988 ◽  
Vol 29 (31) ◽  
pp. 3829-3832 ◽  
Author(s):  
Takeshi Wakamatsu ◽  
Nobuhide Miyachi ◽  
Fumihiro Ozaki ◽  
Masakatsu Shibasaki ◽  
Yoshio Ban
Keyword(s):  
Sesquiterpene Lactone ◽  
Lactone Synthesis

Kinetic Model for Gelation in the Diepoxide−Cyclic Anhydride Copolymerization Initiated by Tertiary Amines

1997 ◽  
Vol 30 (6) ◽  
pp. 1616-1620 ◽  
Author(s):  
A. N. Mauri ◽  
N. Galego ◽  
C. C. Riccardi ◽  
R. J. J. Williams
Keyword(s):  
Kinetic Model ◽  
Tertiary Amines ◽  
Cyclic Anhydride

Determination of fatty alcohol ethoxylates and alkylether sulfates by anionic exchange separation, derivatization with a cyclic anhydride and liquid chromatography

2011 ◽  
Vol 1218 (47) ◽  
pp. 8511-8518 ◽  
Author(s):  
M. Beneito-Cambra ◽  
L. Ripoll-Seguer ◽  
J.M. Herrero-Martínez ◽  
E.F. Simó-Alfonso ◽  
G. Ramis-Ramos
Keyword(s):  
Liquid Chromatography ◽  
Fatty Alcohol ◽  
Alcohol Ethoxylates ◽  
Cyclic Anhydride ◽  
Anionic Exchange

Lactone Synthesis via Biotransformations of ?-Hydroxyamides.

ChemInform ◽  
2005 ◽  
Vol 36 (19) ◽  
Author(s):  
Stephen K. Taylor ◽  
et al. et al.
Keyword(s):  
Lactone Synthesis

Lactone synthesis by electron transfer and radical chemistry

1988 ◽  
Vol 60 (11) ◽  
pp. 1659-1668 ◽  
Author(s):  
J.-M. Surzur ◽  
M. P. Bertrand
Keyword(s):  
Electron Transfer ◽  
Radical Chemistry ◽  
Lactone Synthesis

Darstellung von o-Phenylen-bis(dibromphosphan) — Reaktionsprodukte von o-Phenylen-bis(dichlorphosphan) / Synthesis of o-Phenylene-bis(dibromophosphane) — Reaction Products of o-Phenylene-bis(dichlorophosphane)

1984 ◽  
Vol 39 (12) ◽  
pp. 1706-1710 ◽  
Author(s):  
H.-J. Wörz ◽  
E. Quien ◽  
H. P. Latscha
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrogen Bromide ◽  
Equimolar Amount ◽  
Reaction Products ◽  
Large Excess ◽  
Cyclic Anhydride ◽  
Complete Hydrolysis ◽  
Hydrolysis Of

o-Phenylene-bis(dibromophosphane) (1) is prepared by reaction of P ,P,P′,P′-tetrakis(dim ethylamino)-o-phenylenediphosphane with hydrogen bromide in ether. The reaction of o-phenylene- bis(dichlorophosphane) (2) with CH3OH in ether yields o-phenylene-bis(phosphonousacid- dimethylester) (3). The Michaelis-Arbuzov conversion of 3, either by heat or by catalytic amounts of CH3I in toluene, yields ophenylene-bis(methylphosphinic-acid-methylester) (4). The reduction of 2 must be carried out with a large excess of LiAlH4 (1:4) in ether to give o-phenylenediphosphane (5). The cyclic anhydride (6) of P.P′-dichloro-o-phenylenediphosphonous acid is formed when 2 is hydrolyzed in ether with an equimolar amount of water. Complete hydrolysis of 2 with an excess of water gives o-phenylenediphosphonous acid (7). With hydrogen peroxide o-phenylenediphosphonic acid (8) can be isolated.

Practical β-Lactone Synthesis:  Epoxide Carbonylation at 1 atm

2006 ◽  
Vol 8 (17) ◽  
pp. 3709-3712 ◽  
Author(s):  
John W. Kramer ◽  
Emil B. Lobkovsky ◽  
Geoffrey W. Coates
Keyword(s):  
Lactone Synthesis
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