This invention provides a new synthesis for zearalanone and for related compounds having more or fewer carbon atoms in the non-aromatic ring than does zearalanone, which related compounds and zearalanone are represented by the formula ##SPC1## Wherein X is an integer having a value from 0 to 6 inclusive and Y is an integer having a value from 3 to 8 inclusive. It also provides for new methods of making compounds useful in the synthesis of zearalanone and related compounds. The compounds 6-acetox...

A demodulator for signals angularly related to the position of a rotor of a synchro or resolver uses, in one embodiment, only one transformer in a circuit for subtracting, adding, and phase shifting the signals to produce a single signal phase shifted in proportion to the rotor angle. In another embodiment, a transformerless circuit uses an operational amplifier to derive the phase shifted signal. The phase shifted signal is compared with a reference signal to produce a rectangular wave with a v...

A solid-state high-voltage regulation circuit for devices such as televis receivers which incorporate a flyback transformer. Voltage changes across the transformer secondary winding are compared to a stable reference, and any difference is amplified and applied to control the flow of current to the transformer primary coil. The output voltage is thus maintained essentially constant.

The total synthesis of acronycine and related compounds from readily available starting materials is described, as are various classes of intermediates useful in the synthesis.

A demodulator for signals angularly related to the position of a rotor of a synchro or resolver uses, in one embodiment, only one transformer in a circuit for subtracting, adding, and phase shifting the signals to produce a single signal phase shifted in proportion to the rotor angle. In another embodiment, a transformerless circuit uses an operational amplifier to derive the phase shifted signal. The phase shifted signal is compared with a reference signal to produce a rectangular wave with a v...

The present adamantanecarboxylic acid derivatives of amino acids possess antibiotic activity against a variety of organisms. Thus, they are antibacterial, antiprotozoal, and antialgal agents. The compounds are prepared by the reaction of an adamantanecarbonyl halide, preferably the chloride, with an appropriate amino acid, dipeptide, or polypeptide.

Process for the preparation of an alpha-, omega-disubstituted alkane by reacting a vinyl compound such as ethylene with a chlorine, bromine, or cyanide ion in the presence of an inorganic symmetrical per oxygen compound and a metallic ion of Ni.sup..sup.+2, Co.sup..sup.+2, Mn.sup..sup.+2, Tb.sup..sup.+3, Nd.sup..sup.+3, Pr.sup..sup.+3, Fe.sup..sup.+2, Cu.sup..sup.+2, or Tl.sup..sup.+1.

A demodulator for signals representing the angular position .theta. of a rotor in a synchro or resolver generates a corrected reference signal phase offset from the signal energizing the rotor winding by the amount of inherent phase shift .phi. occurring during signal transfer between the rotor and stator windings. The corrected reference signal is compared with a stator derived signal, produced by subtracting, adding, and 90.degree. phase shifting signals from the stator windings, to produce a ...

A method is disclosed for preparing dideoxyzearalane and related compounds which comprises reacting a hexahydrozearalin with an organic sulfonyl chloride to form a sulfonate ester derivative; recovering the sulfonate ester derivative; and catalytically dehydrosulfonyloxylating and aromatizing the sulfonate ester derivative to form the desired product.

A method is disclosed for preparing dideoxyzearalane and related compounds which comprises reacting an appropriate hydroxy compound with an organic sulfonyl chloride to form a sulfonate ester derivative; recovering the sulfonate ester derivative; and catalytically hydrogenolyzing the sulfonate ester derivative to form the desired product.