Combining Transition Metal Catalysis with Radical Chemistry: Dramatic Acceleration of Palladium‐Catalyzed CH Arylation with Diaryliodonium Salts

This paper describes a photoredox palladium/iridium‐catalyzed CH arylation with diaryliodonium reagents. Details of the reaction optimization, substrate scope, and mechanism are presented along with a comparison to a related method in which aryldiazonium salts are used in place of diaryliodonium reagents. The unprecedentedly mild reaction conditions (25 °C in methanol), the requirement for light and a photocatalyst, the inhibitory effect of radical scavengers, and the observed chemoselectivity trends are all consistent with a radical‐mediated mechanism for this transformation. This stands in contrast to the analogous thermal reaction with diaryliodonium reagents that is believed to proceed via an ‘ionic’ 2 e − pathway and requires a much higher reaction temperature (100 °C).Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95414/1/adsc_201200738_sm_miscellaneous_information.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/95414/2/3517_ftp.pd

Climate adaptation and agriculture: Solutions to successful national adaptation plans

The purpose of this brief is to share insights on agriculture and NAPs with national-level decision makers in developing countries and Least Developed Countries (LDCs), multilateral agencies, UNFCCC negotiators and donors. This brief explores how countries are overcoming the biggest challenges in developing NAPs, outlines examples of successful cross-sector adaptation planning, explores influence and leverage necessary for successful NAP processes, and offers specific recommendations

Climate change adaptation in agriculture: practices and technologies. Messages to the SBSTA 44 agriculture workshops

In 2014 the United Nations Framework Convention on Climate Change (UNFCCC) Subsidiary Body for Scientific and Technological Advice (SBSTA), as part of its mandate to consider issues related to agriculture, decided to invite submissions from parties and observers, covering four topics, in 2015 and 2016. Of the two topics for consideration in 2016, one relates to ‘identification and assessment of agricultural practices and technologies to enhance productivity in a sustainable manner, food security and resilience, considering the differences in agro-ecological zones and farming systems, such as different grassland and cropland practices and systems’. In this info note we provide a brief overview of key practices and technologies. A twinned info note considers higher-level measures of adaptation in agriculture, such as policies and institutions