1) polymer-supported selenium bromide
聚苯乙烯负载硒溴
1.
Treatment of the polymer-supported α-phenylseleno ketones and esters prepared from polymer-supported selenium bromide with ketone and ester enolates with hydrogen peroxide afford α,β-unsaturated ketones and esters in good yields and high purities (>95%) without further purification.
酮或酯在-78℃经二异丙基胺基锂(LDA)作用形成相应的烯醇式氧负离子,烯醇式氧负离子再与聚苯乙烯负载硒溴反应得到聚苯乙烯负载α-硒基酮或酯;常温下将该负载型的α-硒基酮或酯用过量的30%双氧水处理制得相应的α,β-不饱和酮、酯。
2.
Treatment of a suspension of polymer-supported selenium bromide and olefin with carboxylate or alcohol in CH2Cl2 at room temperature produces the corresponding selenide resin, which upon oxidation-elimination with hydrogen peroxide, afford allylic esters and ethers in good yields (75%～85%) and purities (88%～93%) without further purification.
常温下,聚苯乙烯负载硒溴、烯烃和无水羧酸盐或醇在二氯甲烷作溶剂的混合非均相体系中反应得到聚苯乙烯负载硒醚树脂;常温下将该负载型的硒醚树脂用过量的30%双氧水处理制得相应的烯丙基酯或烯丙基醚。
2) polymer-supported vinylic selenides
聚苯乙烯负载烯基硒醚
3) polystyrene-supported α-selenoaldehyde
聚苯乙烯负载α-硒基醛
4) polymer-supported α-selenoacetic acid
聚苯乙烯负载α-硒基乙酸
5) polystyrene-supported (N-phenylseleno)morpholine
聚苯乙烯负载N-硒基吗啉
1.
A novel polystyrene-supported (N-phenylseleno)morpholine was preparaed from polystyrene-supported selenium bromide and morpholine in CH2Cl2 at room temperature.
常温下,聚苯乙烯负载硒溴试剂和吗啉在二氯甲烷中反应得到新型的聚苯乙烯负载N-硒基吗啉试剂;聚苯乙烯负载N-硒基吗啉是含α-氢的醛有效的α-硒基化试剂,该负载型的α-硒基醛经卤代脱硒,以良好的产率(70%～92%)生成α-卤代醛,操作简便(过滤、洗涤),粗产物不需进一步提纯即具有好的纯度(>95%),N-硒基吗啉树脂可再生使用。
6) polystyrene-supported FeCl 3
聚苯乙烯负载三氯化铁
1.
Methods 2% Crosslinked polystyrene-supported FeCl 3 (PS-FeCl 3, 31.
方法各种碳水化合物与丙酮在2%交联聚苯乙烯负载三氯化铁(31。
补充资料：溴化苯硒
分子式：C6H5SeBr
CAS号：
性质：固体。熔点60～62℃。沸点107～108℃(2kPa)。剧毒。乙酸基苯基硒在四氯化碳中与溴反应,然后用乙酸处理而得。合成有机硒化合物的中间体。
CAS号：
性质：固体。熔点60～62℃。沸点107～108℃(2kPa)。剧毒。乙酸基苯基硒在四氯化碳中与溴反应,然后用乙酸处理而得。合成有机硒化合物的中间体。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条