Citation for published item:tmesD F vF nd edmsD gF tF nd folmD gF nd frgD hF nd gollierD F nd pri § s § i¡ D F nd qrepioniD pF nd rrrisD uF hF wF nd ryettD qF nd tonesD F nd uresD eF nd wkD tF nd winiD vF nd yrpenD eF qF nd rkinD sF F nd herouseD F gF nd teedD tF F nd ddellD hF gF @PHIPA 9wehnohemistry X opportunities for new nd lener synthesisF9D ghemil soiety reviewsFD RI @IAF ppF RIQERRUF Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

No abstract

Using the glucose derivatives isosorbide and glucarodilactone along with a castor oil derivative, 10-undecenoyl chloride, two monomers were synthesized: glucarodilactone undecenoate (GDLU) and isosorbide undecenoate (IU). These monomers were polymerized via acyclic diene metathesis (ADMET) polymerization to yield two homopolymers, P­(GDLU) and P­(IU), and two copolymers, P1(GDLU-co-IU) and P2(GDLU-co-IU), of similar number-averaged molecular weight and relative composition (51 and 61 kDa, Đ = 1.8 and 1.4, 46:54 and 52:48 mol percent). Comparison of the physical properties and degradation behavior of these polymers revealed divergent characteristics arising from differences in the nature of the carbohydrate building blocks. P­(IU) is more thermally stable and has a lower glass transition temperature (T d = 369 °C, T g = −10 °C) than P­(GDLU) (T d = 206 °C, T g = 32 °C) and P1,2(GDLU-co-IU) (T d = 210 and 203 °C, T g = 1 and 7 °C). While all of the polymers were stable in acidic and neutral aqueous conditions, the two analogs containing GDLU hydrolytically degraded in the presence of base. Tensile testing of the systems revealed that both homopolymers are brittle materials while the P­(GDLU-co-IU) is more tough. Notably, P1,2(GDLU-co-IU) was found to be a rubbery material with a low Young’s modulus (0.020 and 0.002 GPa, respectively), displaying an average elongation at break of 480 and 640%, and shape memory properties.

No abstract

Herein, we report on the solvent-free synthesis of 2-aminothiophenes via the Gewald reaction. Utilizing high speed ball milling conditions, we discovered the Gewald reaction can be catalytic in base, and conducted under aerobic conditions. Using thermal heat in tandem with the mixer/mill significantly increases the rate of reaction.