Concept

Brønsted–Lowry acid–base theory

Related publications (76)

2-Alkenylphosphonates and PO-ylides derived thereof in trans selective Horner-Wittig olefination reactions

Allylic PO-ylides generated from dialkyl or diaryl 2-alkenylphosphonates by treatment with a strong base react with aldehydes to afford 1,3-dienes trans-selectively. The newly formed double bond typically exhibits Z/E ratios of 1:99. [on SciFinder (R)] ...

1996

Synthesis of some new biflavonoids. II. Synthesis of alpha ,alpha '-bichalcone

Qian Wang, Jieping Zhu, Yulin Li

Starting from phloroglucinol and resorcinol alpha ,alpha '-bichalcone I (R = H, MeO) was synthesized in three steps. The key step is the simultaneous condensation of one mole of 1,4-diketone II with two moles of anisaldehyde catalyzed with boric acid. [on ...

1989

Trans,trans-8,10-Dodecadien-1-yloxysilanes as pesticides

MeCH:CHCH:CH(CH2)6CH2SiR1R2R3 [I; R1, R2 = C1-6 alkyl; R3 = C16 alkyl, Ph], useful as pesticides, are prepd. by treating trans,trans-8,10-dodecadien-1-ol (II) with ClSiR1R2R3 at 10-60 Deg in the presence of a proton acceptor. Thus, 18.2 g II, 17.5 mL Me3Si ...

(Ciba-Geigy A.-G., Switz.).1986

Removing solids suspended in an aqueous medium

Jutta Christine Wandrey

Suspended org. and inorg. solids are removed from aq. soln. by adding an improved water-sol. acryloguanamine copolymer flocculant with mol. wt. >2000 and contg. 0-1000 units each of acrylamide, vinyl guanamine, acrylic acid, trimerized acrylonitrile struct ...

(Institut fuer Wasserwirtschaft, Ger. Dem. Rep.).1985

Dissolution and passivity of nickel in hydrogen fluoride + water + hydrogen chloride system

Christos Comninellis

The anodic behavior of Ni in HF-HCl aq. solns. was examd. The current efficiency for Ni dissoln. was detd. from the wt. loss of Ni polarized anodically, assuming that Ni dissolves as Ni2+. The dissoln. rate decreases markedly for a HF concn. of .apprx.50%. ...

1979

Stereoisomer-uniform olefins

Homogeneous stereoisomeric olefins of the general formula I (R1 and R2 = alkyl, R3 = H and(or) alkyl) were prepd. by reacting a phosphorus ylide (general formula Ar3P+:C-HR) and a carbonyl compd. R2COR3 with stoichiometric amt. of a strong base, followed b ...

(Badische Anilin- & Soda-Fabrik AG).1968

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.