1.
Such a helerocycle is found in pyrylium salts.
吡喃盐就是这类的杂环。
2.
Aerobic Oxidation of Substituted Cyclopentadienes to Pyrylium Cations in Solution;
氧气液相氧化取代环戊二烯合成吡喃盐的研究
3.
Treatments of pyrylium salts with various nucleophilic reagents allows the production of a host of functionalized derivatives.
如果各种亲核试剂与吡喃盐反应，就可制取许多种带官能基的衍生物。
4.
The Research on the Synthesis of Multisubstituted Furans, Pyrroles and Hexatomic Ring Compounds via In-catalyzed;
铟盐催化下合成多取代呋喃、吡咯及六元环化合物的研究
5.
Synthesis of Silicotungstates and Their Catalytic Performance for Tetrahydropyranylation of Alcohol
硅钨酸盐的合成及其在醇的四氢吡喃化反应中的催化性能
6.
Asymmetric Total Synthesis of Benzopyrans and Dibenzopyrans Natural Products;
苯并吡喃及二苯并吡喃类天然产物的手性全合成
7.
Such is the case in pyrrole, thiophene, and furan.
吡咯，噻酚和呋喃的情况就是这样。
8.
Pyran is not aromatic, but the phrylium ion is.
吡喃不是芳香的，但眬英嗡离子是。
9.
The Preparation of Pyrrole from Furan and Ammonia in the Presence of Water Vapor;
水蒸气存在下呋喃与氨反应制备吡咯
10.
Syntheis of 2,5-Diphenyl Furan Dhiophene and Pyrrole Derivatives
2,5-二苯基呋喃、噻吩、吡咯衍生物的合成
11.
New Synthetic Method for 4-Methoxy-7H-Furo[3,2-g] benzopyran-7-one
4-甲氧基-7H-呋喃[3,2-g][1]苯并吡喃-7-酮制备的新方法
12.
Synthesis and characterization of glycosyl esters of cyclopropanecarboxylic acid
(呋喃、吡喃)糖基环丙烷甲酸酯类化合物的合成和结构确证
13.
In guaran, about one-half of the D-mannopyranosyl main-chain units contain a D-galactopyranosyl side chain.
在瓜拉那中约一半D-吡喃甘露糖主链的单元含一个D-吡喃半乳糖侧链。
14.
Synthesis and Activities of 2,3a-Dihydro-chromeno-[4,3-c]pyrazol-3-one Derivatives
2,3a-二氢-苯并吡喃[4,3-c]吡唑-3-酮类衍生物的合成及其活性
15.
Quantum Chemical Study of the Thermolysis of Chroman
苯并二氢吡喃热分解反应的量子化学研究
16.
Design and Synthesis of 3H-Naphtho[2, 1-b]Pyrans Compounds & Studies on Their Photochromic Characteristics;
3H-萘并吡喃的设计合成及变色特性研究
17.
The Synthesis of Derivations of 5-oxo-4H-5,6,7,8-tetrahydrobenzopyran with Microwave Assisted;
5-氧代-4H-5，6，7，8-四氢苯并吡喃衍生物的微波全合成
18.
Synthesis and Properities of Substituted 3H-naphtho[2,1-b]Pyrans;
烷基取代的3H-萘并[2，1-b]吡喃的合成及性能研究