Iodination of protoporphyrin IX dimethyl ester using phenyliodine bis(trifluoroacetate) (PIFA) and I₂ was studied. Iodine added to both the C3- and C8-vinyl groups equally to afford the iodohydrin or iodoether in the presence of water or alcohol, respectively. Any meso-hydrogen atom was not substituted by an iodine atom under these conditions, although both the vinyl group and one of the meso positions of methyl pyropheophorbide-a bearing a chlorin π-system, a chlorophyll-a derivative, was modified with PIFA and I₂. The reaction intermediates derived from the porphyrin were more reactive than those from the chlorin and liable to form intermolecular linkages. The obtained 2-iodo-1-hydroxyethyl group was transformed into a formyl group by a mild treatment. The corresponding iodoether moiety was readily converted into the acetyl group under basic conditions. These transformations were also applicable to smaller olefins such as styrene.

研究了使用苯基碘双（三氟乙酸盐）（PIFA）和I ₂对原卟啉IX二甲酯进行碘化。碘同等地加到C3-和C8-乙烯基上，分别在水或醇存在下提供碘醇或碘醚。任何内消旋α-氢原子没有被在这些条件下，碘原子取代的，尽管这两个乙烯基和一个内消旋甲基的pyropheophorbide-位置一个轴承二氢卟酚的π系统，叶绿素一个衍生物，用PIFA和改性我₂。来源于卟啉的反应中间体比来自二氢卟酚的反应中间体反应性更高，并且易于形成分子间键。通过温和的处理，将获得的2-碘-1-羟乙基转化为甲酰基。在碱性条件下，相应的碘醚部分易于转化为乙酰基。这些转变也适用于较小的烯烃，例如苯乙烯。