Carmustine may be safely and efficiently produced by reacting 2-chloroethylamine hydrochloride and 1,1′-carbonyldiimidazole to afford 1,3-bis(2-chloroethyl)-1-urea, followed by nitrosation to give the final product.

Carmustine may be safely and efficiently produced by reacting 2-chloroethylamine hydrochloride and 1,1′-carbonyldiimidazole to afford 1,3-bis(2-chloroethyl)-1-urea, followed by nitrosation to give the final product.

Carmustine may be safely and efficiently produced by reacting 2-chloroethylamine hydrochloride and 1,1-carbonyldiimidazole to afford 1,3-bis(2-chloroethyl)-1-urea, followed by nitrosation to give the final product.

Carmustine may be safely and efficiently produced by reacting 2-chloroethylamine hydrochloride and 1,1-carbonyldiimidazole to afford 1,3-bis(2-chloroethyl)-1-urea, followed by nitrosation to give the final product.

Carmustine may be safely and efficiently produced by reacting 2-chloroethylamine hydrochloride and 1,1-carbonyldiimidazole to afford 1,3-bis(2-chloroethyl)-1-urea, followed by nitrosation to give the final product.

The present invention relates to an improved process for preparation of carmustine (I). The present invention also relates to preparation of 1,3-bis(2-chloroethyl)urea (II) an intermediate used in preparation of carmustine.

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The present invention relates to an improved process for preparation of carmustine (I). The present invention also relates to preparation of 1,3-bis(2-chloroethyl)urea (II) an intermediate used in preparation of carmustine.

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This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, compositions containing such molecules, and processes of using such molecules and compositions against such pests. These molecules and compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (Formula One). ##STR00001##

This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, compositions containing such molecules, and processes of using such molecules and compositions against such pests. These molecules and compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (Formula One). ##STR00001##

This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, compositions containing such molecules, and processes of using such molecules and compositions against such pests. These molecules and compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (Formula One).

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