Preparation of Vinylphenols and Isopropenylphenols

Reversibly Crosslinked Networks of Nanoparticles in Metallocene-Catalyzed Olefin Polymerization

“…Deionized water (Millipore water) was used throughout the work for the emulsion polymerization. 4-Vinylphenol (1 a) was prepared according to the method of Corson et al [8] Block copolymer 2 (PS-b-PEO) was received from Goldschmidt AG, Essen, Germany.…”

Syntheses of O6‐Alkyl‐ and Arylguanine Derivatives: Nucleobase Adducts Derived from Styrene 7,8‐ and 3,4‐Oxides

“…67-70°C (ref. [31] 68-69°C) which were identified by comparing their NMR spectra with those published. [35] Reaction of 1-Phenylethane-1,2-diol (6) with DABCO-Purine (Conventional Heating): The reaction conditions were analogous to those of Lembitz et al [19] A mixture of 2-amino-6-chloropurine (5; 0.25 g, 1.48 mmol) and DABCO (0.5 g, 4.45 mmol) was dissolved in 4 mL of DMSO and left standing for 3 h to form a solution of 2-amino-6-(1-azonia-4-azabicyclo[2.2.2]oct-1-yl)purine (9; DABCO-purine).…”

“…[30] Arylguanines 22-24 are therefore expected DNA adducts arising from the arene oxi- Vinylphenol (18) is not commercially available and was therefore prepared by alkaline hydrolysis of its acetate. This reaction has been described previously by Corson et al [31] to proceed in aqueous KOH solution. After hydrolysis, the phenolate obtained was acidified with carbon dioxide to liberate phenol 18.…”

Alternatives to chemical amplification for 193nm lithography

“…NMR analysis indicated that polymer compositions were nominally identical to the monomer charge ratio. 4-Acetoxystyrene (96%) was purchased from the Aldrich Chemical Co. p-hydroxystyrene was prepared by hydrolysis of acetoxystyrene, adapting the historic procedure of Corson, et al [13] . Thus, 26.5 g of p-acetoxystyrene doped with 0.025 g of N,N-dimethyl-4-nitrosoaniline was cooled to 0C and diluted with an aqueous solution of 23 g of KOH in 232.5 ml of water.…”