Dehydrogenation as a substrate-activating strategy in homogeneous transition-metal catalysis.

Hydrogen autotransfer in the N-alkylation of amines and related compounds using alcohols and amines as electrophiles.

Alcohols can be temporarily converted into carbonyl compounds by the metal-catalysed removal of hydrogen. The carbonyl compounds are reactive in a wider range of transformations than the precursor alcohols and can react in situ to give imines, alkenes, and α-functionalised carbonyl compounds. The metal catalyst, which had borrowed the hydrogen, then returns it to the transformed carbonyl compound, leading to an overall process in which alcohols can be converted into amines, compounds containing CC bonds and β-functionalised alcohols.

Borrowing hydrogen in the activation of alcohols

Rhodium-catalyzed carbon-carbon bond forming reactions of organometallic compounds.

Organophosphorus π-Conjugated Materials

Transition-metal-mediated phosphorus-carbon bond cleavage and its relevance to homogeneous catalyst deactivation

A new class of organic dielectrics, benzocyclobutenes, 1, are described and their application to the fabrication of thin film multichip modules is detailed. Key properties for3, a siloxy containing BCB derivative include low dielectric constant (2.7), low loss (0.008 at 1 MHz), low water absorption (0.25% after 24 h water boil) and high degree of planarization (>90% from one layer coverage). All other properties meet the requirements necessary for fabrication of thin film MCM structures.

Benzocyclobutene (BCB) dielectrics for the fabrication of high density, thin film multichip modules

Phosphorus- and arsenic-bridged [1]ferrocenophanes. 2. Synthesis of poly((1,1'-ferrocenediyl)phenylphosphine) oligomers and polymers

Reexamination of the reactions of Ph2P(CH2)nPPh2 (n = 1-4) with RuCl2(PPh3)3

The authors demonstrate the feasibility of rapid thermal curing (RTC) of benzocyclobutene (BCB) thin films using an infrared belt furnace. The effects on film properties resulting from a dramatic reduction in cure time (5 h to 5 min) are summarized. The extent of cure was determined by FTIR (Fourier-transform infrared spectroscopy) and was subsequently modeled as a function of reaction kinetics using the measured temperature profiles. FTIR spectra from the RTC films were identical to those obtained using a conventional inert gas oven and a convectively heated belt furnace, indicating that: (1) the polymerization mechanisms and the resulting polymer network structure are identical, and (2) no chemical enhancement of the curing occurs due to the absorption of infrared radiation. There are no statistically significant differences in the resulting stress and adhesion properties for samples cured by the RTC process vs. the conventional process for film thicknesses ranging from 1 to 24 mu m. Planarization measurements, made on isolated features up to 100 mu m in width, also indicate no differences in the cured films. >

Philip E. Garrou

Papers

Transition-metal-mediated phosphorus-carbon bond cleavage and its relevance to homogeneous catalyst deactivation

Benzocyclobutene (BCB) dielectrics for the fabrication of high density, thin film multichip modules

Phosphorus- and arsenic-bridged [1]ferrocenophanes. 2. Synthesis of poly((1,1'-ferrocenediyl)phenylphosphine) oligomers and polymers

Reexamination of the reactions of Ph2P(CH2)nPPh2 (n = 1-4) with RuCl2(PPh3)3

Rapid thermal curing of BCB dielectric