Utility of Nitrogen Nucleophiles: a Simple Route for the Synthesis of 2-Substituted Benzimidazolylpyrimidines
摘要:
An efficient and simple route for the synthesis of 2-substituted benzimidazolylpyrimidines 5a-i has been developed from benzimidazolylunsaturated nitriles 2 using nitrogen nucleophiles. Treatment of 2 with thiourea/urea/guanidine hydrochloride in aq. KOH under reflux for 30min gave 3, which on further alkylation with an alkylating agent under PTC conditions gave 5a-i. Alternatively 5a-i could also be prepared by treatment of 2 with an alkylating agent under PTC conditions followed by treatment with thiourea /urea/guanidine hydrochloride in aq. KOH for 30min.
Compositions and method for regulating soybean plant growth utilizing substituted benzazolylthioalkanoic acids
申请人:MONSANTO COMPANY
公开号:EP0006347A1
公开(公告)日:1980-01-09
This invention relates to a method of regulating the growth of leguminous plants which comprises applying to the plant locus a plant growth regulating effective amount of a compound having the general formula
wherein X is selected from the group consisting of oxygen, sulfur and -NH; R is hydrogen, halogen or lower alkyl; R, is
selected from the group consisting of
R2 is selected from the group consisting of hydrogen, lower alkyl and agriculturally acceptable cations; R3 and R4 are independently selected from the group consisting of hydrogen and lower alkyl; and n is an integer from 1 to 3, with the proviso that when R, is
n cannot be 2.
This invention also relates to a plant growth regulating composition which comprises from about 5 to about 95 parts by weight of a compound having the above general formula, the remaining parts being comprised of one or more suitable adjuvants, carriers and/or diluents.
本发明涉及一种调节豆科植物生长的方法,该方法包括向植物部位施用调节植物生长有效量的通式如下的化合物
其中X选自由氧、硫和-NH组成的组;R是氢、卤素或低级烷基;R是
选自由下列物质组成的组
R2 选自由氢、低级烷基和农业上可接受的阳离子组成的组; R3 和 R4 独立地选自由氢和低级烷基组成的组; n 是 1 到 3 的整数,但当 R 为
n 不能为 2。
本发明还涉及一种植物生长调节组合物,按重量计,该组合物由约 5 至约 95 份具有上述通式的化合物组成,其余部分由一种或多种合适的佐剂、载体和/或稀释剂组成。
Davidson, Jack L.; Murray, Ian E. P.; Preston, Peter N., Journal of Chemical Research, Miniprint, 1981, # 5, p. 1601 - 1627
作者:Davidson, Jack L.、Murray, Ian E. P.、Preston, Peter N.
DOI:——
日期:——
Rao, S. Srinivas; Reddy, Ch Venkata Ramana; Dubey, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2015, vol. 54B, # 6, p. 829 - 832
作者:Rao, S. Srinivas、Reddy, Ch Venkata Ramana、Dubey
DOI:——
日期:——
Davidson,A. et al., Journal of the Chemical Society. Perkin transactions I, 1979, p. 1239 - 1245
作者:Davidson,A. et al.
DOI:——
日期:——
DAVIDSON, J. L.;MURRAY, I. E. P.;PRESTON, P. N., J. CHEM. RES. MICROFICHE, 1981, N 5, 126
作者:DAVIDSON, J. L.、MURRAY, I. E. P.、PRESTON, P. N.