Photochemistry and Strained Molecules

高应变的合成及其反应性的研究 将进行Allenes。拟议的调查将 包括对累积多烯光化学、不对称 光化学过程，卡宾的光生作用，以及 光诱导反应，得到高度应变的联烯。一个主要 目的是开发通用的合成方法， 产生应变二烯和三烯。身份和 高度应变的中间体的反应性将是 通过使用基质隔离方法和瞬态 谱此外，试图使高分子 重量环状型聚合物将通过途径进行 涉及紧张的中间体。 %%% 这项来自有机动力学项目的资助支持了这项工作 纽约大学的理查德·P·约翰逊教授 汉普郡。这些研究将针对合成 高度紧张的有机分子，预计 经历了各种各样的不寻常的反应由 开发用于合成此类化合物的一般方法， 物种，应该可以产生各种各样的 这些化合物目前不可能由任何 其他过程。高活性的张力环物种 只有很短的一段时间，因此专门 需要技术来证明它们的存在。

A study of the synthesis and reactivity of highly strained allenes will be conducted. The proposed investigation will include studies of cumulene photochemistry, asymmetric photochemical processes, photogeneration of carbenes, and photoinduced reactions to give highly strained allenes. A major objective is to develop general synthetic methods for the generation of strained dienes and trienes. The identity and reactivity of the highly strained intermediates will be detected by use of matrix isolation methods and transient spectroscopy. In addition, attempts to make high molecular weight cyclic-type polymers will be conducted via pathways involving strained intermediates. %%% This grant from the Organic dynamics Program supports the work of Professor Richard P. Johnson at the University of New Hampshire. These investigations will be aimed at the synthesis of highly strained organic molecules that are expected to undergo a variety of quite unusual reactions. By the development of general methods for the synthesis of such species, it should be possible to produce a variety of compounds which are currenty impossible to generate by any other process. The highly reactive strained ring species live for only very short periods of time and therefore specialized techniques are required to prove their existence.