National Chemical Laboratory

About: National Chemical Laboratory is a facility organization based out in Pune, Maharashtra, India. It is known for research contribution in the topics: Catalysis & Enantioselective synthesis. The organization has 8891 authors who have published 14837 publications receiving 387600 citations.

Lewis Acid Catalyzed Selective Reactions of Donor–Acceptor Cyclopropanes with 2-Naphthols

Abstract: Lewis acid-catalyzed reactions of 2-substituted cyclopropane 1,1-dicarboxylates with 2-naphthols is reported. The reaction exhibits tunable selectivity depending on the nature of Lewis acid employed and proceed as a dearomatization/rearomatization sequence. With Bi(OTf)3 as the Lewis acid, a highly selective dehydrative [3+2] cyclopentannulation takes place leading to the formation of naphthalene-fused cyclopentanes. Interestingly, engaging Sc(OTf)3 as the Lewis acid, a Friedel-Crafts-type addition of 2-naphthols to cyclopropanes takes place, thus affording functionalized 2-naphthols. Both reactions furnished the target products in high regioselectivity and moderate to high yields.

What is the alternative? Impact assessment tools and sustainable planning

Abstract: This paper takes a critical look at environmental impact assessment (EIA), especially in the UK, and evaluates its strengths and weaknesses in terms of sustainable spatial planning. Of the many shortcomings and criticisms levelled at impact assessment, the paper concentrates on those elements considered crucial to a move towards sustainable planning, in particular the role of public participation, issues of alternatives and uncertainty, the problem of cumulative effects, the diversity of value systems, the issue of decision-making and the links from impact assessment into integrated environmental management. It concludes that the current European Union (UK) EIA system does not, and probably will not, without radical improvement, offer a tool for sustainable planning.