1,6-Conjugate addition of zinc alkyls to para-quinone methides in a continuous-flow microreactor

2017 ◽  
Vol 15 (1) ◽  
pp. 56-60 ◽  
Author(s):  
Abhijeet S. Jadhav ◽  
Ramasamy Vijaya Anand
Keyword(s):  
Continuous Flow ◽  
Conjugate Addition ◽  
Quinone Methides ◽  
Flow Microreactor

An efficient protocol has been developed for the 1,6-conjugate addition of zinc alkyls to p-quinone methides under continuous-flow using a microreactor.

scholarly journals Base-Catalyzed 1,6-Conjugate Addition of Nitroalkanes to p-Quinone Methides under Continuous Flow

ACS Omega ◽  
2018 ◽  
Vol 3 (10) ◽  
pp. 13967-13976 ◽  
Author(s):  
Rajat Pandey ◽  
Ramasamy Vijaya Anand
Keyword(s):  
Continuous Flow ◽  
Conjugate Addition ◽  
Quinone Methides

Copper-catalyzed 1,6-conjugate addition of para-quinone methides with diborylmethane

2021 ◽  
Author(s):  
Xin Li ◽  
Guoliang Gao ◽  
Songtao He ◽  
Qiuling Song
Keyword(s):  
Catalytic System ◽  
Conjugate Addition ◽  
Quinone Methides ◽  
High Yields

Presented herein is the first 1,6-conjugate addition of diborylmethane, which is promoted by a simple and inexpensive copper catalytic system. This method features high yields, good selectivities and broad functional...

Transformation of 1-Butene over Synthetic Zeolites

1992 ◽  
Vol 57 (4) ◽  
pp. 869-881 ◽  
Author(s):  
Italo Ferino ◽  
Roberto Monaci ◽  
Vincenzo Solinas ◽  
Lucio Forni ◽  
Antonio Rivoldini ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Continuous Flow ◽  
Liquid Mixture ◽  
Isomerization Reaction ◽  
Reaction Conditions ◽  
Title Reaction ◽  
Y Zeolites ◽  
Temperature Range ◽  
Flow Microreactor ◽  
Synthetic Zeolites

The behaviour of several zeolites as catalysts for the title reaction has been investigated by means of a continuous flow microreactor. Runs performed at atmospheric pressure indicated that at 423 K the completely protonic forms of the zeolites catalyze just the isomerization reaction. In the case of Y zeolites, oligomerization occurs only over the partially decationated samples, in the temperature range between 373 and 423 K and W/F between 0.2 and 22 gcath/g1-but, to an extent which depends on the reaction conditions. Most of the catalysts were tested also under pressure (4.05 MPa) at 423 K. The protonic forms of Y and ZSM-5 zeolites seem promising catalysts in terms of both conversion and selectivity to oligomers. The 1-olefins account for 30% of the entire olefinic mixture. The octenes, which account for 70% of the liquid mixture, are mostly formed of dimethylhexenes. Trimers are also formed during the reaction and, in the very particular case of H[B]ZSM-5, tetramers are produced.

Organocatalytic cascade 1,6-conjugate addition/annulation/tautomerization of functionalized para-quinone methides: Access to chiral 2-amino-4-aryl-4H-chromenes

2018 ◽  
Vol 29 (8) ◽  
pp. 1273-1276 ◽  
Author(s):  
Cong Duan ◽  
Ling Ye ◽  
Wenqin Xu ◽  
Xinying Li ◽  
Feng Chen ◽  
...  
Keyword(s):  
Conjugate Addition ◽  
Quinone Methides

scholarly journals Dynamic characterization of nanoparticles production in a droplet-based continuous flow microreactor

2019 ◽  
Vol 144 ◽  
pp. 247-257 ◽  
Author(s):  
Haiyun Ma ◽  
Nan Jin ◽  
Peng Zhang ◽  
Yufei Zhou ◽  
Yuchao Zhao ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Dynamic Characterization ◽  
Flow Microreactor
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