Richard W. Berger

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—This paper describes the design, implementation, and characterization of a monolithic charge amplification channel for use as a piezoelectric sensor front-end in extreme environment applications. 12 The design leverages a 50 GHz peak-f T SiGe BiCMOS technology platform to achieve functionality across a wide-temperature range from-180ºC to 120ºC. As part of(More)
A highly practical method for the enantioselective allylation of ketone-derived benzoylhydrazones has been developed. The previously reported strained silacycle reagent 1 reacts with a wide variety of benzoylhydrazones to give the hydrazide products with good to excellent enantioselectivity (84-97% ee). A mechanism in which the acylhydrazone becomes(More)
The enantioselective Friedel-Crafts reaction of electron-rich arenes and heteroarenes with the benzoylhydrazone of isopropyl glyoxylate mediated by a simple chiral silane Lewis acid is described. The reactions are highly practical, as demonstrated by a larger scale (5 g of the hydrazone) reaction in which the recovery of the pseudoephedrine in 99% yield was(More)
— High speed channel (HSC) resistive sensor interface is an analog sampling channel designed for measuring the resistance variations with data rate at 5 kHz. It measures the external resistance variation and digitizes the received signal using a 12-bit analog to digital converter (ADC). The HSC includes a Wheatstone bridge with programmable configurations,(More)
A highly practical method for the enantioselective allylation of acylhydrazones has been developed. The previously reported strained silacycle reagent 1 reacts with a wide variety of acylhydrazones to give the hydrazide products with good enantioselectivity (83-89% ee, typically). It has been demonstrated that the products may be isolated without(More)
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