ChemInform Abstract: Rhodium(I)-Catalyzed Reductive Cyclocarbonylation of Internal Alkynes: Atom-Economic Process for Synthesis of 2-Cyclopenten-1-ones, 5-Alkylidenefuran-2(5H)-ones and Indan-1-ones.

<div>A highly chemo- and regioselective cyclo(co)trimerization between 3-halopropiolamides and symmetrical internal alkynes is reported. The reaction is catalyzed by Ru(II)-complexes and proceeds at ambient temperature in ethanol to deliver fully substituted dihalogenated isophthalamides. 1,4-Butynediol was found to undergo spontaneous lactonization with halopropiolamides after trimerization to provide 5,7-dihalo-phthalide products.</div>

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The Entropy Law and the Economic Process. Nicholas Georgescu-Roegen

Philosophy of Science ◽

10.1086/288463 ◽

1972 ◽

Vol 39 (3) ◽

pp. 423-424

Author(s):

L. A. Boland

Keyword(s):

Economic Process

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Equilibrium and System Analysis in Economic Dynamics

Accounting Economics and Law - A Convivium ◽

10.1515/ael-2018-0027 ◽

2019 ◽

Vol 9 (3) ◽

Author(s):

Yuri Biondi

Keyword(s):

System Analysis ◽

Space Time ◽

Human Behaviour ◽

Economic Dynamics ◽

Economic Theories ◽

Economic Process

Abstract Many economic theories rely on equilibrium. Notwithstanding its widespread framing role, the very notion of equilibrium shows epistemic and methodological limits when confronted with space, time, human behaviour and institutions. A systemic perspective may upgrade equilibrium by considering the featuring roles of economic organisation (entity), money and accounting in the economic process. This article tributes to Martin Shubik’s scholarship and friendship by providing a systemic perspective on his last co-authored book with Eric Smith.

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Intermolecular [5+2] Annulation between 1‐Indanones and Internal Alkynes by Rh‐catalyzed C−C Activation

Angewandte Chemie ◽

10.1002/ange.202106007 ◽

2021 ◽

Author(s):

Rui Zhang ◽

Ying Xia ◽

Guangbin Dong

Keyword(s):

Internal Alkynes

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Rhodium-Catalyzed, Phosphorus(III)-Directed Hydroarylation of Internal Alkynes: Facile and Efficient Access to New Phosphine Ligands

Synlett ◽

10.1055/a-1314-0064 ◽

2020 ◽

Author(s):

Minyan Wang ◽

Zhuangzhi Shi ◽

Huanhuan Luo ◽

Dawei Wang

Keyword(s):

High Selectivity ◽

Enantiomeric Excess ◽

Phosphine Ligands ◽

Rapid Construction ◽

Efficient Access ◽

Internal Alkynes ◽

Great Progress ◽

Chiral Phosphine Ligands ◽

Optimized Conditions ◽

Made In

AbstractOrganophosphines are an important class of ligands widely used in organic chemistry. Although great progress has recently been made in the rapid construction of new phosphines through Rh- or Ru-catalyzed C–H bond functionalizations, synthetic access to more diverse phosphines remains a challenge. We describe an efficient process for the rhodium-catalyzed phosphorus(III)-directed hydroarylation of internal alkynes to generate various alkenylated and 2′,6′-dialkenylated biarylphosphines with high selectivity. A range of diverse alkynes and phosphines were effectively prepared with broad functional-group compatibility under the optimized conditions. In addition, the developed protocol can be extended to modify chiral phosphine ligands, providing enantioenriched alkenylated phosphines without erosion of the enantiomeric excess.

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