Enol Ester as an Olefinic Partner in Enyne Cyclization. A Novel Tandem Cyclization to Stereodefined Bicyclo[3.3.0]octenes

2003 ◽  
Vol 125 (14) ◽  
pp. 4036-4037 ◽  
Author(s):  
Hirokazu Urabe ◽  
Daisuke Suzuki ◽  
Misa Sasaki ◽  
Fumie Sato
Keyword(s):  
Enyne Cyclization ◽  
Tandem Cyclization ◽  
Enol Ester

scholarly journals Enol Ester as an Olefinic Partner in Enyne Cyclization. A Novel Tandem Cyclization to Stereodefined Bicyclo[3.3.0]octenes.

ChemInform ◽  
2003 ◽  
Vol 34 (31) ◽  
Author(s):  
Hirokazu Urabe ◽  
Daisuke Suzuki ◽  
Misa Sasaki ◽  
Fumie Sato
Keyword(s):  
Enyne Cyclization ◽  
Tandem Cyclization ◽  
Enol Ester

Gold(i)-catalyzed tandem cyclization of cyclopropylidene-tethered propargylic alcohols: an approach to functionalized naphtho[2,3-c]pyrans

2020 ◽  
Vol 56 (64) ◽  
pp. 9154-9157
Author(s):  
Jian Li ◽  
Fang Yang ◽  
Weiwei Hu ◽  
Bo Ren ◽  
Zi-Sheng Chen ◽  
...  
Keyword(s):  
Ring Opening ◽  
Propargylic Alcohols ◽  
Enyne Cyclization ◽  
Tandem Cyclization

An unprecedented gold(i)-catalyzed cyclization of cyclopropylidene-tethered ynols via a 6-endo-dig enyne cyclization followed by a ring-opening of cyclopropane and nucleophilic closure reaction to construct naphtho[2,3-c]pyrans was developed.

scholarly journals Concatenated Batch and Continuous Flow Procedures for the Upgrading of Glycerol-Derived Aminodiols via N-Acetylation and Acetalization Reactions

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 21
Author(s):  
Davide Rigo ◽  
Nadia Alessandra Carmo Dos Santos ◽  
Alvise Perosa ◽  
Maurizio Selva
Keyword(s):  
Continuous Flow ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Catalyst Free ◽  
Amide Derivatives ◽  
Amide Acetal ◽  
Enol Ester ◽  
Isopropenyl Acetate

An unprecedented two-step sequence was designed by combining batch and continuous flow (CF) protocols for the upgrading of two aminodiol regioisomers derived from glycerol, i.e., 3-amino-1,2-propanediol and 2-amino-1,3-propanediol (serinol). Under batch conditions, at 80–90 °C, both substrates were quantitatively converted into the corresponding amides through a catalyst-free N-acetylation reaction mediated by an innocuous enol ester as isopropenyl acetate (iPAc). Thereafter, at 30–100 °C and 1–10 atm, the amide derivatives underwent a selective CF-acetalisation in the presence of acetone and a solid acid catalyst, to afford the double-functionalized (amide-acetal) products.

scholarly journals Palladium-Catalyzed Tandem Cyclization/Suzuki Coupling of 1,6-Enynes: Reaction Scope and Mechanism.

ChemInform ◽  
2005 ◽  
Vol 36 (31) ◽  
Author(s):  
Gangguo Zhu ◽  
Xiaofeng Tong ◽  
Jiang Cheng ◽  
Yanhui Sun ◽  
Dao Li ◽  
...  
Keyword(s):  
Suzuki Coupling ◽  
Palladium Catalyzed ◽  
Tandem Cyclization

PTSA-catalyzed tandem cyclization protocol for the stereoselective total synthesis of obolactone

2010 ◽  
Vol 51 (17) ◽  
pp. 2295-2296 ◽  
Author(s):  
Palakodety Radha Krishna ◽  
Palabindela Srinivas
Keyword(s):  
Total Synthesis ◽  
Tandem Cyclization

A novel photochemical 1,2-acyl migration in an enol ester. The synthesis of 3-oxazoline derivatives.

1983 ◽  
Vol 24 (11) ◽  
pp. 1197-1200 ◽  
Author(s):  
Diego Armesto ◽  
Maria J. Ortiz ◽  
Rafael Pérez-Ossorio ◽  
William M. Horspool
Keyword(s):  
Acyl Migration ◽  
Enol Ester ◽  
Oxazoline Derivatives
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