This is a division of application Ser. No. 357,757 filed May 7, 1973 now U.S. Pat. No. 3,920,438, issued Nov. 18, 1975.
Number | Name | Date | Kind |
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3066149 | Slezak et al. | Nov 1962 | |
3299098 | Reifschneider | Jan 1967 | |
3439051 | Levine | Apr 1969 | |
3663543 | Gulbenk et al. | May 1972 |
Entry |
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Bottini, et al., "2-Methyl-5,6-Dihydro-1,4-etc.," (1966), CA64, p. 15890 (1966). |
Asinger, et al. I, "Joint Action of Elementary Sulfur, etc.," (1971), CA76, No. 72466y, (1972). |
Rubenstein, et al., "Preparation of Substituted, etc.," (1969), CA71, No. 91403p, (1969). |
Asinger, et al. II, "Concomitant Action of Elementary, etc.," (1964), CA61, pp. 1854-1856, (1964). |
Number | Date | Country | |
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Parent | 357757 | May 1973 |