Protonation of the reactive intermediate produced in the  reaction between trimethyl phosphite and dimethyl acetylenedicarboxylate or diethyl acetylenedicarboxylate by resorcinol, 5-methylresorcinol, 2,5-dihydroxyacetophenone, 4-chloro-2-methylphenol, 4-chloro-3,5-dimethy-lphenol, 4-hydroxypyridine, 2-hydroxypyridine, 3-hydroxypyridine, or 8-hydroxyquinoline leads to vinylphosphonium salts,...

The key to realize long-life high energy density lithium batteries is exploit functional electrolytes capable of stabilizing both voltage cathode and anode. emergence localized high-concentration (LHCEs) shows great promise for ameliorating the above-mentioned interfacial issues. In this work, a difluoro(oxalate)borate (LiDFOB) based nonflammable dual-anion LHCE designed prepared. Dissolving in...

The title compound, [Co(C(8)H(4)O(4))(C(13)H(14)N(2))(2)(H(2)O)(2)](n), was obtained by the reaction of CoCl(2), 4,4'-trimethyl-enedipyridine and terephthalic acid in a 1:1:1 ratio. The octa-hedrally coordinated cobalt ions are bridged by 4,4'-trimethyl-enedipyridine ligands, generating a chain. These chains are further linked by O-H⋯O and O-H⋯N hydrogen bonds, giving a three-dimensional network.

A mixture of (E,Z)-isomers of methyl 12-trishomofarnesoate (methyl 3,7,11-trimethyl-2,6,10-pentadecatrienoate), a juvenile hormone mimic, was synthesized in nine steps (32.6% overall yield) by starting from only four commercially available materials: 2-hexanone, vinylmagnesium bromide, methyl acetoacetate and trimethyl phosphonoacetate. The mimic is useful in increasing the yield of silk by elo...

In 1-cyclohexyl-6,6,8a-trimethyl-3a,6,7,8a-tetrahydro-1H-1-benzofuro[2,3-b]pyrrole-2,4(3H,5H)-dione, C19H27NO3, (I), and the isomorphous compounds 6,6,8a-trimethyl-1-phenyl-3a,6,7,8a-tetrahydro-1H-1-benzofuro[2,3-b]pyrrole-2,4(3H,5H)-dione, C19H21NO3, (II), and 6,6,8a-trimethyl-1-(3-pyridyl)-3a,6,7,8a-tetrahydro-1H-1-benzofuro[2,3-b]pyrrole-2,4(3H,5H)-dione, C18H20N2O3, (III), the tetrahydroben...

The toxicity of tetra and trimethyl and propyl lead compounds has been studied after their administration to rats and rabbits. The toxicity to rats of tetramethyl lead has been compared with tetraethyl lead when given by inhalation. Both tetramethyl and tetrapropyl lead were found to be considerably less toxic than trimethyl and tripropyl lead. There was evidence of a slow rate of conversion of...