scholarly journals Asymmetric Diels–Alder Reactions of an Acrylic Acid Derivative Using a Chiral Titanium Catalyst

1991 ◽  
Vol 64 (2) ◽  
pp. 387-391 ◽  
Author(s):  
Koichi Narasaka ◽  
Hiroko Tanaka ◽  
Fumihiko Kanai
Keyword(s):  
Acrylic Acid ◽  
Acid Derivative ◽  
Diels Alder ◽  
Titanium Catalyst

Diels–Alder and Dehydration Reactions of Biomass-Derived Furan and Acrylic Acid for the Synthesis of Benzoic Acid

ACS Catalysis ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 6946-6955 ◽  
Author(s):  
Eyas Mahmoud ◽  
Jingye Yu ◽  
Raymond J. Gorte ◽  
Raul F. Lobo
Keyword(s):  
Acrylic Acid ◽  
Benzoic Acid ◽  
Diels Alder ◽  
Dehydration Reactions

The synthesis, thermochromism, and cycloadditive properties of an O-methylenethioquinone system

1977 ◽  
Vol 55 (21) ◽  
pp. 3763-3773 ◽  
Author(s):  
P. de Mayo ◽  
H. Y. Ng
Keyword(s):  
Thermodynamic Parameters ◽  
Acid Derivative ◽  
Acid Catalysis ◽  
Ion Pair ◽  
Pair Formation ◽  
Membered Ring ◽  
Diels Alder ◽  
Ion Pair Formation ◽  
Thiosalicylic Acid

The irradiation of 4,5-benzo-1,2-dithiole-3-thione (1) in the presence of cyclopentene and of tetramethylethylene gives 1:1 adducts. In solution these adducts are in equilibrium with eight-membered-ring dimers. The thermodynamic parameters for this equilibrium have been determined. The available evidence suggests a head-to-head configuration. These same monomeric adducts give Diels–Alder addition products with normal dienophiles, but also react similarly with simple thiones (adamantanethione, norbornanethione, cyclohexanethione) to give thioorthoesters. The structures of the latter substances have been demonstrated both spectroscopically and, chemically, by hydrolysis to a thiosalicylic acid derivative. The thioorthoesters have been shown to undergo stereoisomerization on acid catalysis. Of the two mechanisms considered for this process (reversal to thiones and ion-pair formation) the former has been excluded.

REGIOSELECTIVE CYCLIZATION OF S-ACRYLIC ACID DERIVATIVE OF 1,2,4-BENZOTRIAZINE TO 10H-[1,3]THIAZIN0 [2,3-C][1,2,4] BENZOTRIAZIN-4-ONE

2001 ◽  
Vol 170 (1) ◽  
pp. 187-190 ◽  
Author(s):  
Majid M. Heravi ◽  
Naser Montazeri ◽  
Mohammad Rahimizadeh ◽  
Mehdi Bakavoli ◽  
Mitra Ghassemzadeh
Keyword(s):  
Acrylic Acid ◽  
Acid Derivative
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